Ernst von Glasersfeld

Available texts can be downloaded also from the homepage of Ernst von Glasersfeld:

(1962). "Towards the mechanical construction of correlational nets", CETIS Reports, #42. Brussels: EURATOM.

von Glasersfeld, E., Perschke, S., & Samet, E. (1962). "Human translation and translation by machine", 1961 International Conference on Machine Translation of Languages and Applied Language Analysis, Vol.II. London: H.M.Stationery Office, (507-530).

(1963). "Some notes on inter-language correspondence". In S.Ceccato (Ed.), Linguistic analysis and programming for mechanical translation. New York: Gordon & Breach, (117-129).

(1961/63). "Operational semantics: Analysis of meaning in terms of operations", EURATOM Reports (EUR 296e). Brussels: EURATOM Publications.

von Glasersfeld, E. & Barton-Burns, J. (1962). "First draft of an English input procedure", Methodos, 14 (54), 47-79.

(1963). "The functions of the articles in English", Research Report. Milan, Italy: Center for Cybernetics. Italian translation: Chapter 3 in 116.

(1963). "Probleme der maschinellen Übersetzung", Beiträge zur Sprachkunde und Informationsverarbeitung (3), 33-47.

(1964). "A project for automatic sentence analysis", Beiträge zur Sprachkunde und Informationsverarbeitung (4), 38-46.

(1965). "An approach to the semantics of prepositions". In H.Josselson (Ed.), Proceedings of Las Vegas Conference on Computer-related semantic analysis. Detroit, MI: Wayne State University, XIII/1-24. Italian translation: Chapter 1 in 116

(1965). "Multistore: A procedure for correlational analysis", Automazione e Automatismi, 9 (2), 5-28.

von Glasersfeld, E. & Terzi P. (1965). "Automatic English sentence analysis", Final Report, AFOSR Grant AF EOAR 64-54. Milan, Italy: IDAMI Language Research Section.

von Glasersfeld, E. & Dutton B. (1966). "Supralinguistic classification and correlators", Beiträge zur Linguistik und Informationsverarbeitung (9), 29-49.

(1966). "Beauty and the mechanics of perception", Rivista Pininfarina. Turin, Italy: Stabilimenti Pininfarina.

von Glasersfeld, E., Burns, J., Pisani, P., Notarmarco, B., & Dutton, B. (1966). "Automatic English sentence analysis", Final Report, AFOSR Grant 65-76. Milan, Italy: IDAMI Language Research Section.

von Glasersfeld, E. & Pisani, P. (1968). "The Multistore system MP-2", Research Report. Athens, GA: The Georgia Inst.for Research.

(1968). "Alla ricerca di dati precisi", Nuovo 75,(2), 36-40.

von Glasersfeld, E. & Notarmarco, B. (1968). "Some adjective classes derived from correlational grammar", Research Report. Athens, GA: The Georgia Inst. for Research.

(1969). "Semantics and the syntactic classification of words", Proceedings of the Third International Conference on Computational Linguistics. Sanga Såby, Sweden: ICCL.

von Glasersfeld, E. & Pisani, P. (1970). "The Multistore parser for hierarchical syntactic structures", Communications of the Association for Computing Machinery, 13 (2), 74-82.

(1970). "The correlational approach to language", Pensiero e Linguaggio, 1 (4), 391-398. Italian translation: Chapter 1 in 116.

(1970/71 ). "The problem of syntactic complexity in reading and readability", J. of Reading Behavior, 3 (2), 1-14. German translation: Chapter 1 in 106. Ital. translation: Chapter 5 in 116.

(1972). "Semantic analysis of verbs in terms of conceptual situations", Linguistics (94), 90-107. Chapter 1 in 105. German translation: Chapter 3 in 106. Ital. translation: Chapter 4 in 116.

(1972). "Reading, understanding, and conceptual situations". In F.P.Greene (Ed.), 21st Yearbook of the National Reading Conference. Milwaukee, WI: N.C.R., 119-127. German translation: Chapter 2 in 106. Ital. translation: Chapter 6 in 116.

von Glasersfeld, E., Warner, H., Pisani, P., Rumbaugh, D., Gill, T.V., & Bell, C.L. (1973). "A computer mediates communication with a chimpanzee", Computers and Automation, 22 (7), 3-6.

Rumbaugh, D., von Glasersfeld, E., Warner, H., Pisani, P., Gill, T.V., & Bell, C.L. (1973). "A computer-controlled language training system for investigation of language skills in young apes", Behavioral Research Methods and Instrumentation, 5 (5), 382-390.

Rumbaugh, D., Gill, T.V. & von Glasersfeld, E. (1973). "Reading and sentence completion by a chimpanzee", Science, 182, 731-733.

Rumbaugh, D.M., von Glasersfeld, E., Warner, H., Pisani, P., Gill, T.V., & Bell, C.L. (1973). "Exploring the language skills of Lana Chimpanzee", International J. of Symbology, 4 (2), 1-9.

Rumbaugh, D.M., Gill, T.V., & von Glasersfeld, E. (1974). "Language in man, monkey, and machines (Reply to Mistler & Lachman)", Science, 185, 872-873.

Rumbaugh, D.M., von Glasersfeld, E., Warner, H., Pisani, P., & Gill, T.V. (1974). "Lana (chimpanzee) learning language: A progress report", Brain and Language, 1, 205-212.

(1974). "Verständigung mit Schimpanzen", Die Weltwoche (14), 49-50.

(1974). "Because and the concepts of causation", Semiotica, 12 (2), 129-144. Chapter 2 in 105. German translation: Chapter 4 in 106.

(1974). "Signs, communication, and language", J. of Human Evolution, 3, 465-474. German translation: Chapter 5 in 106. Ital.translation: Chapter 11 in 116.

Smock, C.D. & von Glasersfeld, E. (Eds.). (1974). "Epistemology and education: The implications of radical constructivism for knowledge acquisition", Report #14) (14). Athens, GA: Follow Through Publications.

(1974). "Piaget and the radical constructivist epistemology". In C.D.Smock & E. von Glasersfeld (Eds.), Epistemology and education. Athens, GA: Follow Through Publications, 1-24. Chapter 6 in 105. German translation: Chapter 9 in 106.

(1974). "The Yerkish language for non-human primates", American J. of Computational Linguistics, 1, Microfiche 12.

Tomasello, M. & von Glasersfeld, E. (1975). "The concepts of appearance, disappearance, and reappearance: A developmental semantic analysis", Follow Through Report #17. Athens, GA: Follow Through Publications.

Rumbaugh, D.M., von Glasersfeld, E., Gill, T.V., Warner, H., Pisani, P., Brown, J.V., & Bell, T.V. (1975). "The language skills of a young chimpanzee in a computer-controlled training situation". In R.H.Tuttle (Ed.), Socioecology and psychology of primates. The Hague: Mouton.

Rumbaugh, D.M., Gill, T.V., von Glasersfeld, E., Warner, H., & Pisani, P. (1975). "Conversations with a chimpanzee in a computer-controlled environment", Biological Psychiatry, 10 (6), 627-641.

(1976). "The development of language as purposive behavior". In S.R.Harnad, H.D.Steklis, & J.Lancaster (Eds.), Annals of the New York Academy of Sciences, 280, 212-226. Chapter 3 in 105. German translation: Chapter 6 in 106. Ital.translation: Chapter 10 in 116. von Glasersfeld, E. & Silverman, P. (1976). "Man-machine understanding", Communications of the Association of Computer Machinery, 19 (10), 586-587.

von Glasersfeld, E. & Shumaker, N.W. (1976). "Review of Schank's Conceptual Information Processing", Computers and the Humanities, 10 (4), 236-237.

Rumbaugh, D.M., Gill, T.V., & von Glasersfeld, E. (1976). "La lectura y el completado do oraciones, realizados por un chimpance". In V. Sanchez de Zavala (Ed.), Sobre el lenguaje de los antropoides. Madrid: Sigle Veintiuno, 137-146.

(1976). "Cybernetics and cognitive development", Cybernetics Forum, 8, 115-120.

Rumbaugh, D.M., Warner, H., & von Glasersfeld, E. (1977). "The Lana project: Origin and tactics". In D.M.Rumbaugh (Ed.), Language learning by a chimpanzee. New York: Academic Press, 87-90.

(1977). "Linguistic communication: Theory and definition". In D.M.Rumbaugh (Ed.), Language learning by a chimpanzee. New York: Academic Press, 55-71. Italian translation: Chapter 12 in 116.

(1977). "The Yerkish language and its automatic parser". In D.M.Rumbaugh (Ed.), Language learning by a chimpanzee. New York: Academic Press, 91-130. Italian translation: Chapter 13 in 116.

(1977). "Russian essays on lexical semantics" (Book review), American J. of Computational Linguistics, 14 (2), 16-33.

(1977). "Comunicare con un scimpanze". In Istituto di Psicologia, CNR (Ed.), Problemi attuali di psicologia. Rome, Italy: Bulzoni, 145-158.

(1978). "Radical constructivism and Piaget's concept of knowledge". In F.B.Murray (Ed.), The impact of Piagetian theory. Baltimore, MD: University Park Press, 109-122.

(1978). "Another minor revision - or the disregard for control theory and the analysis of inductive feedback mechanisms", The Behavioral and Brain Sciences, 1 (1), 79-80.

(1978). "Les chimpanzés et le langage", La Recherche, 9 (92), 725-732.

(1978). "Some problems of intentionality, The Behavioral and Brain Sciences, 1 (2), 252-253.

Gash, H. & von Glasersfeld, E. (1978). "Vico: An early anticipator of radical constructivism", The Irish J. of Psychology, 4 (1), 22-32.

Richards, J. & von Glasersfeld, E. (1979). "The control of perception and the construction of reality", Dialectica, 33 (1), 37-58.

(1979). "Cybernetics, experience, and the concept of self". In M.N.Ozer (Ed.), A cybernetic approach to the assessment of children: Toward a more humane use of human beings. Boulder, CO: Westview Press, 67-113. Chapter 9 in 105. German translation: Chapter 14 in 106.

(1979). "Reflections on John Fowles' "The Magus" and the construction of reality", The Georgia Review, 33 (2). 444-448.

Steffe, L.P., Richards, J., & von Glasersfeld, E. (1979). "Models for the child's acquisition of counting, addition, and subtraction". In K.C.Fuson & W.E.Geeslin (Eds.), Explorations in the modeling of the learning of mathematics. Columbus, OH: ERIC, 22-44.

Richards, J. & von Glasersfeld, E. (1980). "Jean Piaget, the psychologist of epistemology", J. for Research in Mathematics Education, 11 (1), 29-36.

(1980). "Viability and the concept of selection", American Psychologist, 35 (11), 970-974. Chapter 4 in 105. German translation: Chapter 7 in 106.

(1980). "After metaphysics: Toward a grammar of interaction and discourse" (Book review), American Anthropologist, 82 (2), 409-410.

(1980). "The concept of equilibration in a construc-tivist theory of knowledge". In F.Benseler, P.M.Hejl, & W.K.Koeck (Eds.), Auto-poiesis, communication, and society. Frankfurt/New York: Campus, 75-85. German translation: Chapter 16 in 106.

(1981). "The conception and perception of number". In W.E.Geeslin & S.Wagner (Eds.), Models of mathematical and cognitive development. Columbus, OH: ERIC, 15-46.

Steffe, L.P., Richards, J., & von Glasersfeld, E. (1981). "Reflections on interdisciplinary reseach". In W.E.Geeslin & S.Wagner (Eds.), Models of mathematical and cognitive development, 135-143.

(1981). "An attentional model for the conceptual construction of units and number", J. for Research in Mathematics Education, 12 (2), 83-94. Reprinted in Steffe, EvG, Richards, & Cobb (see 76,77,78). Chapter 13 in 105. German translation: Chapter 20 in 106. Italian translation in 107 [Methodologia 1 (2)].

(1981). "The concepts of adaptation and viability in a constructivist theory of knowledge". In I.E.Sigel, D.M.Brodzinsky, and R.M. Golinkoff (Eds.), Piagetian theory and research. Hillsdale, N.J.: Erlbaum, 87-95. Chapter 8 in 105. German translation: Chapter 13 in 106.

(1981). "An epistemology for cognitive systems". In G.Roth & H.Schwegler (Eds.), Self-organizing systems. Frankfurt/New York: Campus, 121-131. German translation: Chapter 15 in 106.

(1981). Feedback, induction, and epistemology. In G.E.Lasker (Ed.), Applied systems and cybernetics, Vol.2. New York: Pergamon Press, 712-719. Chapter 11 in 105. German translation: Chapter 18 in 106.

(1981). "Einführung in den radikalen Konstruktivismus". In P. Watzlawick (Ed.), Die erfundene Wirklichkeit. Munich, Germany: Piper, 16-38. Chapter 17 in 106. English: Chapter 1 in 85; and chapter 10 in 105.

(1981). "The truth about Pythagoras", Problem Solving, 3 (5/6), 1,11.

von Glasersfeld, E. & Kelley, M.F. (1981). "On the concepts of period, phase, stage, and level", J. of Human Development, 25, 152-160.

(1981). "Things, pluralities, and counting". In C. Comiti & G. Vergnaud (Eds.), Proceedings of 5th International Conference on Psychology in Mathematics Education, Vol.1. Grenoble, France: IMAG, 18-24.

(1982). "Subitizing - The role of figural patterns in the development of numerical concepts", Archives de Psychologie, 50, 191-218. Chapter 14 in 105. German translation: Chapter 21 in 106.

(1982). "Cheers for the champion?" , Problem Solving, 4 (9), 6.

(1982). "The abstraction of counting units". In S.Wagner (Ed.), Proceedings of 4th Annual Meeting of the North American Group for Psychology in Mathematics Education. Athens, GA: NA-PME, 50-56.

(1982). "An interpretation of Piaget's constructivism", Revue Internationale de Philosophie, 36 (4), 612-635. Chapter 12 in 105. German translation: Chapter 19 in 106. Reprinted in L.Smith (Ed.) Jean Piaget, Critical assessments (Vol.VI,p.41-61). London: Routledge, 1992.

von Glasersfeld, E. & Richards, J. (1983). "The creation of units as a prerequisite for number: A philosophical review". In L.P.Steffe, E.von Glasersfeld, J.Richards, and P.Cobb (Eds.), Children's counting types: Philosophy, theory, and application. New York: Praeger, 1-20.

von Glasersfeld, E., Steffe, L.P., and Richards, J. (1983). "An analysis of counting and what is counted". In L.P.Steffe, E.von Glasersfeld, J.Richards, and P.Cobb (Eds.), Children's counting types: Philosophy, theory, and application. New York: Praeger, 21-44.

Richards, J., Steffe, L.P., and von Glasersfeld, E. (1983). "Perspectives and summary". In L.P.Steffe, E.von Glasersfeld, J.Richards, and P.Cobb (Eds.), Children's counting types: Philosophy, theory, and application. New York: Praeger, 112-123.

(1983). "On the concept of interpretation", Poetics, 12 (2/3), 207-218. German translation: Chapter 8 in 106. Ital.translation: Chapter 8 in 116.

(1983). "Learning as a constructive activity". In J.C.Bergeron and N.Herscovics (Ed.), Proceedings of the 5th Annual Meeting of the North American Group of Psychology in Mathematics Education, Vol.1. Montreal: PME-NA, 41-101. Chapter 15 in 105. German translation: Chapter 22 in 106.

von Glasersfeld, E. and Cobb, P. (1983). "Knowledge as environmental fit", Man-Environment Systems, 13 (5), 216-224.

(1984). "An introduction to radical constructivism". In P. Watzlawick (Ed.), The invented reality. New York: Norton, 17-40.

Cobb, P. and von Glasersfeld, E. (1984). "Piaget's scheme and constructivism", The Genetic Epistemologist, 13 (2), 9-15.

(1984). "Thoughts about space, time, and the concept of identity". In A. Pedretti (Ed.), Of of: A book conference. Zuerich, Switzerland: Princelet Editions, 21-36.

(1984). "To hell with psychology" (Book review), J. for Research in Mathematics Education, 15 (5), 389-391.

(1984). "Konstruktivistische Diskurse", Lumis Schriften, 2. Siegen, Germany: Institute for Empirical Literature and Media Research, 1-19.

von Glasersfeld, E.and Varela F.(1985). "Problems of knowledge and cognizing or-ganisms", Aprendizagem/Desenvolvimento (Learnig and Development) , 2 (6),17-23.

(1985). "Reconstructing the concept of knowledge", Archives de Psychologie, 53, 91-101.

(1985). "Representation and deduction". In L.Streefland (Ed.), Proceedings of the 9th International Conference on Psychology of Mathematics Education, Vol.1. Utrecht, The Netherlands: State University Utrecht, 484-489.

(1985). "Konstruktion der Wirklichkeit und des Begriffs der Objektivität". In H.Gumin and A.Mohler (Ed.), Einführung in den Konstruktivismus. Munich, Germany: Oldenbourg, 1-26.

(1985). "Il complesso di semplicità" (The simplicity complex). In G.L.Bocchi and M.Ceruti (Ed.), La sfida della complessità. Milan, Italy: Feltrinelli,103-111.

(1985). "L'approche constructiviste vers une théorie des représentations". Montreal, Canada: CIRADE (Université du Québec).

Steffe, L.P. and von Glasersfeld, E. (1985). "Helping children to conceive of number", Recherches en Didactique des Mathématiques, 6, 269-303.

(1986). "Siegfried Schmidts Doppelleben". In S.Schmidt (Ed.), Schreibwerke und Kopfstücke. Bochum, Germany: Museum Bochum.

(1986). "Why can't Johnny add?" (Book review), J. for Research in Mathematics Education, 17 (2), 151.

(1986). "The power of abused terms", Teaching, Thinking, Problem Solving, 8 (3), 7.

(1986). "Steps in the construction of others and reality". In R.Trappl (Ed.), Power, autonomy, utopias: New approaches toward complex systems. London: Plenum Press, 107-116.

von Glasersfeld, E. and Steffe, L.P. (1986). "Composite units and the operations that constitute them". In L.Burton (Ed.), Proceedings of the 10th International Meeting on Psychology in Mathematics Education. London: University of London Institute of Education, 212-216.

(1986). "Kant, constructivism, and the territorial dogma", Continuing the Conversation (ASC Newsletter), 2 (5), 3.

Powers, W.T., and von Glasersfeld, E. (1986). "A control conversation", Continuing the Conversation , 1986 (7), 3-4.

(1986). "Wissen ohne Erkenntnis", Delfin, 4 (1), 20-27.

(1986). "Of knowing, telling, and showing", Cybernetic, 2 (1), 64-67.

(1987). "Preliminaries to any theory of representation". In C. Janvier (Ed.), Problems of representation in the teaching and learning of mathematics. Hillsdale, N.J.: Erlbaum, 215-225.

(1987). "Siegener Gespräche über radikalen Konstruktivismus". In S.J.Schmidt (Ed.), Der Diskurs des radikalen Konstruktivismus. Frankfurt, Germany: Suhrkamp, 401-440.

(1987). "The construction of knowledge - Contributions to conceptual semantics". Salinas, CA: Intersystems Publications. Contains: 22,31,34,39,55,59,64,67,72,75,80.

(1987). "Wissen, Sprache und Wirklichkeit". Wiesbaden, Germany: Vieweg. Contains: 21,22,23,31,32,34,39,55,59,61,64,65,66,67,68,72,79,80.

(1987). "Un modello attenzionale per la costruzione concettuale delle unita e del numero", Methodologia, 1 (2), 5-20.

Steffe, L.P. and von Glasersfeld, E. (1988). "On the construction of the counting scheme". In L.P.Steffe and P.Cobb (Ed.), Construction of arithmetical meaning and strategies (1-19), New York: Springer.

(1988). "Should cybernetics be useful?", Continuing the Conversation, 1988 (12), 5.

(1988). "The reluctance to change a way of thinking", Irish J. of Psychology, 9 (1), 83-90. Italian translation, see 123.

(1988). "An introduction to radical constructivism". In R.Donaldson (Ed.), Texts in cybernetics (Felton, CA). American Society for Cybernetics.

(1988). "La logica de la falibilidad cientifica", Psicoterapia y Familia, 1 (2), 41-48.

(1989). "Constructivism". In T.Husen and T.N.Postlethwaite, (Ed.), International encyclopedia of education, Supplement Vol.1. Oxford/New York: Pergamon Press, 162-163.

(1988). "The cybernetic basis of behavior", Continuing the Conversation, (16), 5-6.

(1989). "Commentaire subjectif par un observateur". In N.Bednarz and C.Garnier (Ed.), Construction des savoirs. Montreal, Canada: ARC, 367-371.

(1989). "Linguaggio e comunicazione nel costruttivismo radicale". Milan, Italy: CLUP. Contains: 9,20,21,22,23,32,39,45,46.

(1989). "Cognition, construction of knowledge, and teaching", Synthese, 80 (1), 121-140. Reprinted in M.R.Matthews (Ed.), History, philosophy, and science teaching. New York: Teachers College Press, 1991. Italian translation, see 129.

(1989). "Objectivity, autonomy, funding, and the survival of multiple cultures". In J.P.Goetz and J-B.Allen (Ed.), Qualitative research in education. Athens,GA: The University of Georgia, 157-161.

(1989). "Children's mathematical thinking" (Book review), Zentralblatt für Didaktik der Mathematik, 21 (3), 104.

(1989). "Préface". In M.Larochelle and J.Désautels (Ed.), Qu'est ce que le savoir scientifique? Québec,Canada: Presses de l'Université Laval, VII-IX.

(1989). "Notes sur une théorie de la connaissance pour organismes auto-regulateurs", Aprendizagem/desenvolvimento (Learning and Development) , 3 (9), 51-53.

(1989). "Facts and the self from a constructivist point of view". Poetics, 18(4-5), 435-448.

(1989). "Notes sur une Théorie de la Connaissance pour Organismes Auto-régulateurs", Aprendizagem/desenvolvimento (Learning and Development), 3 (9), 51-53.

(1989). "La riluttanza a cambiare modo di pensare", Psicologia e Lavoro, 19 (74/75), 42-46.

(1990). "Environment and communication". In L.P.Steffe and T.Wood (Ed.), Transforming children's mathematics education. Hillsdale, N.J.: Erlbaum, 30-38.

(1990). "Die Unterscheidung des Beobachters: Versuch einer Auslegung". In V.Riegas and C.Vetter (Ed.), Zur Biologie der Kognition. Frankfurt, Germany: Suhrkamp, 281-295. Italian translation in 133, Methodologia 5(8).

(1990). "Scheidewege des Verstehens/ Watersheds of understanding". In G.Weber and F.B.Simon (Ed.), Carl Auer: Geist or ghost. Heidelberg, Germany: Carl Auer Verlag, 22-43.

(1990). "An exposition of constructivism: Why some like it radical". In R.B.Davis, C.A.Maher, and N.Noddings (Ed.), Monographs of the J. for Research in Mathematics Education, #4. Reston, VA: National Council of Teachers of Mathematics, 19-29. Reprinted in 139.

(1990). "Teleology and the concepts of causation", Philosophica, 46 (2), 17-43.

(1990). "Zuerst muß man zu zweit sein (You have to be two to start)", Systeme - Zeitschrift der andouml;sterr. Arbeitsgemeinschaft für sytemische Therapie. 4(2/90), 119-135.

(1990, Sept.). "Cognizione, costruzione della conoscenza, e insegnamento". In Comune di Modena (Ed.), Sistema educativo: Prospettive di mutamento (3). Modena, Italy: Franco Angeli, 133-155.

(1991). "Abstraction, re-presentation, and reflection". In L.P.Steffe (Ed.), Epistemological foundations of mathematical experience. New York: Springer, 45-67.

von Glasersfeld, E. and Steffe, L.P. (1991). "Conceptual models in education-al research and practice", Journal of Educational Thought, 25 (2), 91-103.

(1991). "Knowing without metaphysics: Aspects of the radical constructivist position". In F.Steier (Ed.), Research and reflexivity. London: Sage, 12-29.

(1991). "Distinguendo l'osservatore:un tentativo di interpretare Maturana", Methodologia, 5 (8), 92-111.

(1991). "Fiktion und Realität aus der Perspektive des radikalen Konstruktivismus". In F.Roetzer and P.Weibel (Ed.), Strategien des Scheins. Munich: Klaus Boer, 161-175.

(1991). "Abschied von der Objektivität". In P.Watzla-wik and P.Krieg (Ed.), Das Auge des Betrachters. Munich, Germany: Piper, 17-30.

(1991). "A constructivist's view of learning and teaching". In R.Duit, F.Goldberg, and H.Niedderer (Ed.), Research in physics learning: Theoretical issues and empirical studies - Proceedings of an international workshop. Kiel, Germany: IPN, 29-39.

von Glasersfeld, E. (Editor). (1991). Radical constructivism in mathematics education. Dordrecht: Kluwer.

(1991). "Knowing in self-regulating organisms (A constructivist approach)". In S.A.Umpleby and V.N.Sadovsky (Ed.), A science of goal formulation. New York: Hemisphere, 1-8.

(1991). "An exposition of radical constructivism". In G.J.Klir (ed.) Facets of system science, (229-238). New York/London: Plenum Press.

(1991). "Wissen ohne Erkenntnis (Knowledge without Ekenntnis)". In M.Peschl (Ed.), Formen des Konstruktivismus in Diskussion, (24-31). Vienna: WVF - Universitätsverlag.

(1992). "Aspetti del costruttivismo: Vico, Berkeley, Piaget". In M.Ceruti (Ed.), Evoluzione e conoscenza. Bergamo, Italy: Lubrina, 421-432.

(1992). "Why I consider myself a cybernetician", Cybernetics and Human Knowing, 1 (1), 21-25.

(1992). "Apprendimento e insegnamento dal punto di vista del costruttivismo", L'Educazione Matematica, III, 2 (1), 27-39.

(1992). "Cybernetics (Declaration of the ASC)". In C.V. Negiota (Ed.), Cybernetics and applied systems. New York: Marcel Decker, 1-5.

(1992). "El constructivismo radical", Sistemas Familiares, 8 (3), 49-54.

von Glasersfeld, E. (1992). "On manifestly (or, at least, apparently) timeless objectivity", Phil.of Math.Education Newsletter (POME) (6), 12-13.

(1992). "Notes constructivistes sur l'éducation", Séminaires CIRADE (72). Université du Québec à Montréal, 2-9.

(1992). "A constructivist approach to experiential foundations of mathematical concepts". In S.Hills (Ed.), History and philosophy of science in science education. Kingston, Ontario: Queen's University, 551-571.

(1992). "Talking, teaching, and meaning". In D. Kamm (Ed.), Aufbruch in neue Lernwelten. Munich, Germany: Expedition 92, 64-67, 104.

(1992). "Guest Editorial", Educational Studies in Mathematics, 23, 443-444.

(1992). "Das Ende einer grossen Illusion (The end of a grand illusion)". In H.R.Fischer, A.Retzer and J.Schweitzer (Ed.), Das Ende der grossen Entwürfe. Frankfurt, Germany: Suhrkamp, 85-98.

(1992). "Constructivism reconstructed (Reply to Suchting)", Science and Education, 1, 379-384

(1992). "Aspekte des Konstruktivismus: Vico, Berkeley, Piaget". In G.Rusch and S.J.Schmidt (Ed.), Delfin 1992. Konstruktivismus: Geschichte und Anwendung. Frankfurt am Main: Suhrkamp, 20-33.

(1992). "Phil.of mathematics (Review of Paul Ernest)", Zentralblatt für Didaktik der Mathematik, 24 (2), 46.

(1992). "Questions and answers about radical constructivism". In M.K.Pearsall (Ed.), Scope, sequence, and coordination of secondary school science, Vol.II: Relevant research, (169-182). Washington, D.C.: The National Science Teachers Association. Reprinted in 162. Italian translation, see 164.

(1993). "Reflections on number and counting". In S.T.Boysen and E.J.Capaldi (Ed.), The development of numerical ability: Animal and human models. Hillsdale, N.J.: Erlbaum, 225-243.

(1993). "(Nüss and Groeben) Erfindungen des radikalen Konstruktivismus" (Book Review), Soziologische Revue, 16, 3, 288-290.

(1993). "Questions rather than answers", Cybernetics and Human Knowing,1 (4), 57-59.8

(1993). "Das Radikale in Piagets Konstruktivismus (The radical in Piaget's constructivism)". In R.Duit and W.Gräber (Eds.) Kognitive Entwicklung und Lernen der Naturwissenschaften (Cognitive development and learning in of the natural sciences), (46-62). Kiel, Germany: IPN.

(1993). "Warum sprechen wir, und die Schimpansen nicht?" (Why do we speak, and chimpanzees do not?). In I.Hosp (Ed.) Sprachen des Menschen, Sprache der Dinge (Languages of mankind, language of things) (53-61). Bolzano, Italy: Südtiroler Kulturinstitut.

(1993). "Learning and adaptation in the theory of constructivism", Communication and Cognition, 26(3/4), 393-402.

(1993). "Questions and answers about radical constructivism". In K.Tobin (Ed.), The practice of constructivism in science education, (23-38). Washington: AAAS Publications

(1993). "Notes on the concept of change", Cahiers de la Fondation Archives Jean Piaget, No.13 (91-96). Geneva: Fondation Archives Jean Piaget.

(1993). "Il costruttivismo: domande e risposte", Teoria Sociologica, 1 (2), 19-42.

(1993). "Response to Masani", Kybernetes, 22 (7), 58-59.

(1993). "Response to David Johnson's response", Cybernetics and Human Knowing, 2 (2), 55.

(1993). "Letter to the Editor (Response to Matthews)", J.of Science Education and Technology, 2 (4), 511.

(1993). "Suggerimenti costruttivisti per i processi formativi - La costruzione della conoscenza e il rapporto con l'altro". In Paolo Perticari (Ed.) Della conversazione (19-35) Rimini (Italy): Guaraldi.

(1994). "Que pouvons nous savoir do notre connaissance?" (What can we know about our knowledge?). In M.Elkaïm (Ed.) La thérapie familiale en changement (Changing family therapy) (191-195). Brussels: Les Empêcheurs de Penser en Rond.

(1994). "Die Struktur des individuellen Wissens". In P.Felixberger (Ed.) Aufbruch in neue Lernwelten, (33-39). Vienna: Passagen.

(1994). "Pourquoi le constructivisme doit-il être redical?", Revue des Sciences de l'Éducation, 20(1), 21-27.

(1994). "Wiener's insight into communication", Kybernetes, 23 (6/7), 21-22.

(1994). "Piagets konstruktivistisches Modell: Wissen und Lernen". In G.Rusch and S.J.Schmidt (Ed.), Delfin 1993 (16-42). Frankfurt am Main: Suhrkamp.

(1994). "A radical constructivist view of basic mathematical constructs". In Paul Ernest (Ed.), Constructing mathematical knowledge: Epistemology and mathematics education (5-7). London: Falmer Press.

(1994). "La costruzione della conoscenza", Scienze dell'Interazione, 1(1), 5-13. Spanish translation, see 176.

(1994). "Das Hervorbringen von Wissen und Wirklichkeit". In K-D. Heines (Ed.) Menschsein in unserer Zeit - Der Zeitgeist auf dem Prüfstand (107-117). Bremen, Germany: Stiftung Dr.Heines.

(1994). "La construcción del conocimiento" (The construction of knowledge). In Dora Fried Schnitman (Ed.), Nuevos paradigmas, cultura y subjetividad (115-128). Buenos Aires: Paidos. (Portugese translation of 176). "A construçao do conhecimento". In D.F.Schnittman (Ed.) Novos paradigmas, cultura e subjetividade (75-84), Porto Alegre, Brazil: Artes Medicas, 1996.

(1994). "Cosa si prova quando s'impara?" In P.Perticari and M.Sclavi (Eds.), Il senso dell'imparare (17-25). Milan, Italy: Anabasi.

(1995). "A constructivist approach to teaching". In L.P.Steffe and Gale (Ed.), Constructivism in education (3-15). Hillsdale, NJ: Erlbaum.

(1995). "Sensory experience, abstraction, and teaching". In L.P.Steffe and Gale (Ed.), Constructivism in education (369-383). Hillsdale, NJ: Erlbaum.

(1995). "Radical constructivism: A way of knowing and learning". (213 pages) London: Falmer Press.

(1995). "Suggerimenti costruttivisti per i processi formativi, la costruzione della conoscenze e il rapporto con l'altro". In P. Perticari (Ed.) Della Conversazione (19-35). Rimini: Guaraldi (dated 1993)

(1995). "A rejoinder to Otte", Philosophy of Mathematics Newsletter, 8, p.18-19. 3

(1995). "Die Wurzeln des Radikalen am Konstruktivismus". In H.R.Fischer (Ed.), Die Wirklichkeit des Konstruktivismus, (35-45). Heidelberg: Carl Auer.

(1995). "Learning Mathematics: Constructivist and interactionist theories of mathematical development" (Book Review), Zentralblatt für Didaktik der Mathematik, 27 (4), 120-123.

von Glasersfeld, E.& Lochhead, J. (1995). "La formation d'une communauté scientifique à l'age de l'électronique". In A,Giordan, J-L. Martinand, and D.Raichvarg (Eds.), Que savons-nous des savoirs scienitifiques et techniques? (Proceedings of the 17th International Meeting on Communication, Education, and the Scientific and Industrial Cultures, 1995), 47-50. Chamonix: Centre Jean Franco.

(1995). "Zuerst muß man zu zweit sein" (First there have to be two). Multimind/NLP Aktuell, 4(4), 42-51. Revised version in 190.

(1995). "Aspekte einer konstruktivistischen Didaktik" (Aspects of constructivist didactics). In Regional Institute for school and secondary education (Ed.), Lehren und Lernen als konstruktive Tätigkeit,(7-14). Soest, Germany: 1995

(1995). "Introduction: Aspects of constructivism". In C.T.Fosnot (Ed.) Constructivism: Theory perspectives, and practice (3-7), Teacher College Press, Columbia University.

(1995). "Conceptions et connaissances" (review of book by Giordan, Girault,& Clément), Didaskalia, 6, 180-181.

(1996). "Grenzen des Begreifens" (Limits of understanding) (105 pages). Bern (Switzerland): Benteli Verlag.

(1996). "The limits of science (Letter)", Academe, March/April 1996; 3-4.

(1996). "Radikaler Konstruktivismus: Ideen, Ergebnisse, Probleme". (German translation of Radical constructivism: A way of knowing and learning) (375 pages). Frankfurt am Main: Suhrkamp.

(1996). "Footnotes to Many faces of constructivism". Educational Researcher, 25(6), p.19.

(1996). "Learning and adaptation in the theory of constructivism". In Les Smith (Ed.), Critical readings on Piaget (20-27). London/New York: Routledge. (Reprinting of 161)

(1996). "Aspects of radical constructivism and its educational recommendations". In L.P.Steffe, P.Nesher, P.Cobb, G.A.Goldin, and B.Greer (Eds.) Theories of mathematical learning, (307-314). Hillsdale, NJ: Lawrence Erlbaum.

(1996). "Interprétation constructiviste de l'épistémologie génétique". In O.Z.Mantovani de Assiz, Assis, and Z. Ramozzi-Chiarottino (Eds.), Piaget, teoria e pratica (Piaget, theory and practice), Proceedings of the 4th International Symposium on Genetic Epistemology, (176-182). Aguas de Lindoia, (Brazil): U. of Sao Paulo and U. of Campinas.

(1996). "Farewell to objectivity", Systems Research, 13(3), 279-286. Revised and expanded version of 135.

(1996). "Die Welt als Black Box". In V.Braitenberg and I.Hosp (Eds.), Die Natur ist unser Modell von ihr (Nature is our model of it). Proceedings of the Bolzano Meeting, 1995. (15-25). Reinbeck, Hamburg: Rowohlt.

(1996). "Réponse à S.Johsua" (Response to S.Johsua), Didaskalia, 8, 195.

(1996). "Une interprétation constructiviste de l'Épistémologie Génétique" (A constructivist interpretation of Genetic Epistemology), Methodologia 16, 1996, 1-9.

Lohhead, J, and von Glasersfeld, E. (1996). "Pourquoi des étudiant(e)s doué(e)s se détournent-ils des sciences?" In A.Giordan, J.L.Martinand, and D.Raichvarg (Eds.), Actes des XVIIIes Journées Internationales sur la communication, l'éducation et la culture scientifiques et industrielles (41-46). Chamonix, France: Centre Jean Franco.

(1996). "Construtivismo radical, una forma de cohecer e aprender" (Radical constructivism, a way of knowing and learning). Lisbon, Portugal: Instituto Piaget. Portugese translation of 180 (Falmer Press book)

(1996). "Aspectos del constructivismo radical" (Aspects of radical constructivism), in M.Pakman (Ed.), Construcciones de la experiencia humana (23-49). Barcelona, Spain: Gedisa Editorial.

(1996). "Cybernetics and the art of living", Cybernetics and Systems, 27 (6), 489-497.

(1996). "Le constructivisme radical et quelques-unes de ses rec ommandations en matière d'éducation", Télémaque, 6, June 96, 37-44.

(1997). "Wege des Wissens" (Ways of knowing: Constructivist explorations of thinking) 263 pages. Heidelberg, Germany: Carl Auer, 1997. Contains German translations of: 56, 69, 84, 91, 102, 112, 117, 128, 136/143, 179, and German originals: 134, 187; 1994 Hdlbg."Rules", 1995;

(1997). "In difesa di Whorf", Working Papers, n.82, 1-2. Milan, Italy: Società di Cultura Metodologico-Operativa, 1997

(1997). "A cybernetician before cybernetics", Systems Research and Behavioral Science, 14(2), 137-139.

(1997). "The incommensurability of scientific and poetic knowledge", Methodologia 17, 1997, 1-7.

(1997). "Kleine Geschichte des Konstruktivismus" (Brief history of constructivism), Österreichische Zeitschrift für Geschichtswissenschaft, 8 (1), 9-17.

(1997). Wege des Wissens (Ways of knowing: Constructivist explorations of thinking) 263 pages. Heidelberg, Germany: Carl Auer, 1997.
Contains German translations and of previous items, and German originals of 1994 Hdlbg, "Rules", 1995 + journalism of the 1950s.

(1997). "A cybernetician before cybernetics", Systems Research and Behavioral Science, 14 (2), 137-139.

(1997). "A postscript to Kenneth Boulding", Systems Research and Behavioral Science, 14 (3), 221-224.

(1997). "In Memory of a Pioneer, Silvio Ceccato, 1914-1997", Working Papers, n. 91, Milan, Italy: Società di Cultura Metodologico-Operativa, Dec. 1997.

Glasersfeld, E.von & Ackermann, E. (1997) "Heinz von Foerster zum 85. Geburtstag", In F.Stadler (Ed.) Konstruktivismus und Kognitionswissenschaft, Wien: Springer.

(1997). "La teleologia e i concetti di causa", Pluriverso, 2/97, 60-75.
Ital. translation of a previous item.

(1997). "Il costruttivismo radicale, ovvero la costruzione della conoscenza (Radical constructivism, or the construction of knowledge)". In P.Watzlawick & G.Nardone (Eds.), Terapia breve strategica (Strategic brief therapy), 19-30, Milan: Raffaello Cortina.
Reprint of a previous item.

(1997). "Homage to Jean Piaget", Irish J.of Psychology, 18 (3), 293-306.

(1997). "Amplification of a constructivist perspective", Issues in Education, 3 (2), 203-209.

(1998). "Cognition, construction of knowledge, and teaching" and "Constructivism reconstructed: A reply to Suchting". In M.R.Matthews (Ed.), Constructivism in science education, 11-30 and 93-98. Dordrecht: Kluwer.
Reprint of previous items.

(1998). "Obituary: Silvio Ceccato (1914-1997)", Cybernetics and Systems, 29 (3), 213-214.

(1998). "Breve risposta a Sigiani (Brief reply to Sigiani)", Working Papers, n.94, 9. Milan, Italy: Società di Cultura Metodologico-Operativa.

(1998) "Konstruktivismus statt Erkenntnistheorie (Constructivism instead of theory of knowledge)". In T.Hug (Ed.), Technologiekritik und Medienpädagogik, 9-21. Hohengehren: Schneider Verlag.

(1998). "Anticipation in the constructivist theory of cognition". In D.M.Dubois (Ed.), Computing anticipatory systems, 38-47. Woodbury,NY: American Institute of Physics.

(1998). "Why constructivism must be radical", in M.Larochelle, N.Bednarz, & J.Garrison (Eds.), Constructivism in education, 23-28. Cambridge, UK: Cambridge University Press.

(1998). "Cronaca di consapevolezze operativa personale (A chronicle of personal operational awareness)". In AA.VV.,Categorie, tempo e linguaggio (Categories, Time and Language), Quaderni di Methodologia 5, 9-16. Roma.

(1998). "Konstruktivismus statt Erkenntnistheorie", in W.Dörfler & J.Mitterer (Eds.), Ernst von Glasersfeld, Konstruktivismus statt Erkenntnistheorie, 11-39. Klagennfurt: Drava Verlag.

(1998). "Welten konstruieren (On constructing worlds)", Dialog edited by Rusolf Maresch, Telepolis Online, Dec.12, 1998.

(1998). "Was im Kopf eines anderen vorgeht,können wir nie wissen (We cannot know what goes on in another’s head)", Interview by B.Pörksen, Communicatio Socialis, 31 (4), 386-404.

(1998). "Die Radikal-Konstruktivistische Wissenstheorie", Ethik und Sozialwissenschaften, 9 (4), 503-511 and 581-596.

(1998). "The incommensurability of scientific and poetic knowledge". World Futures, 53, 19-25.

(1998). Il costruttivismo radicale: Una via per conoscere ed imparare, Quaderni di Methodologia 6. (192 p.) Rome.
Italian translation of a previous item.

(1998). "Pensare insieme la conoscenza scientifica e la conoscenza poetica". Pluriverso, 3 (4), 69-73.

(1998). "Zuerst muß man das Lernen lernen (First one must learn to learn)". In R.Voß (Ed.) SchulVisionen - Theorie und Praxis systemisch-konstruktivistischer Pädagogik, 33-43. Heidelberg: Carl Auer.

(1999). "The cybernetic insights of Jean Piaget", Cybernetics and Systems, 30 (2) 105-112.

(1999). "A model for the construction o elementary concepts". In D.M.Dubois (Ed.) Computing anticipatory systems, 45-52. Woodbury, NY: American Institute of Physics.

(1999). "Comment: Piaget's epistemology", Karl Jaspers Forum, TA15 C10, 16 Feb.99 (Website, McGill U. Montreal).

(1999). "Il costruttivismo e le sue radici (Constructivism and its roots)", Oikos Website, Rome .

(1999). "Social constructivism as a philosophy of mathematics" (Book Review, Paul Ernest)), Zentralblatt für Didaktik der Mathematik, 99 (2), 71-73.

(1999). "How do we mean? A constructivist sketch of semantics", Cybernetics and Human Knowing, 6 (1), 9-16

T-G Foerster, H.von, & Glasersfeld, E.von. (1999) Wie wir uns erfinden. Eine Autobiographie des radikalen Konstruktivismus (How we invent ourselves: An autobiography of radical constructivism). Heidelberg: Carl Auer.

(1999). "A proposito dei bilingui (About bilinguals)", Working Papers, n.109, (1-2), Società di Cultura Metodologico-Operativa, Milan, Italy: S.C.M-O. (

(1999). "Der unbehagliche Blick aufs Wissen (The unsettling look at knowledge)", Soziologische Revue, 22 (3), 287-292.

(1999). "Le Moigne's defense of constructivism". In GRASCE (Ed.) Entre systémique et complexité, chemin faisant (Between systemics and complexity - making the way), 85-90. Paris: Presses Universitaires de France.

(1999). "Omaggio al maestro (Homage to the master)", In AA.VV., Studi in memoria di Silvio Ceccato (Studies in memory of Silvio Ceccato), Quaderni di Methodologia 7, 15-21. Roma

(1999). Radical construtivism: A way of knowing and learning. Korea: Won Mi Publisher.
Korean translation of a prevous paper.

(1999). "Piaget's legacy: Cognition as adaptive activity". In A.Riegler, M.Peschl, & A.von Stein (Eds.) Understanding representation in the cognitive sciences - Does representation need reality?, 283-287. New York/Dordrecht: Kluwer Academic/Plenum Publishers.

(1999). "Konstruktivismus und Unterricht (Constructivism and instruction)", Zeitschrift für Erziehungswissenschaft , 2 (4), 499-506.

(1999). "Konstruktivistische Anregungen für Lehrer: Was in Bezug auf Sprache zu bedenken wäre (Constructivist suggestions for teachers: What should be considered in regard to language)". In E.Renk (Ed.) Lernen und Leben aus der Welt im Kopf, Konstruktivismus in der Schule (Learning and living from the world in one's head, Constructivism in the school), 5-18. Neuwied, Kriftel: Luchterhand.

(2000). "Ratio rediviva", Ethik und Sozialwissenschaften, 11 (1), 99.

(2000). "Entretien avec E.v.G." (Interview by Claudia Natale), Thérapie Familiale, 21 (1) 27-32.

(2000). "Reflections on cybernetics", Cybernetics and Human Knmowing, 7 (1), 93-95.

(2000). "Problems of constructivism". In L.P.Steffe & P.W.Thompson (Eds.), Radical constructivism in action - Building on the pioneering work of Ernst von Glasersfeld, 1-9. London: Routledge/Falmer.

(2000). "On ethics", ASCD Systems Thinking and Chaos Theory News Letter, July 2000, 3-4.

(2000). "Gesellschaft als subjektive Erfahrung (Society as subjective experience)", Contribution to Festschrift for Siegfried Schmidt. Compact Disc and web site (

Glasersfeld, E.von, & Stadler, M. (2000) "Wir machen, was wir sehen - Lockere Einführung in den Konstruktivismus (We make what we see, a casual introduction to cnstructivism)". In Heute ist Morge (Today is tomorrow), pp.137-149, edited and published by Kunst- und Ausstellungshalle der Bundesrepublik, Bonn (Germany).

(2000). "A proposito dell'operare costitutivo (About constitutive operating)", Working Papers, n.122, (1-2), Società di Cultura Metodologico-Operativa, Milan, Italy: S.C.M-O. (

(2000). "Vorwort: Fremde Sprachen, fremde Begriffe (Preface, Foreign languages, foreign concepts)", in M.Wendt (Ed.) Konstruktion statt Instruktion (Construction instead of instruction), 9-11. Bern/Frankfurt: Peter Lang.

(2000). "Streitschrift gegen die Bigotrie (Pamphlet against bigotry)", Ethik und Sozialwissenschaften, 11(3), 374-375.

(2000). "Silvio Ceccato and the correlational grammar". In W.J.Hutchins (Ed.) Early years in machine translation, 313-324. Amsterdam/Philadelphia: John Benjamins Publishing Co.

(2000). "Die Schematheorie als Schlüssel zum Paradoxon des Lernens ", H.R.Fischer & S.J.Schmidt (Eds.) Wirklichkeit und Welterzeugung, In memoriam Nelson Goodman (Reality and world making), 119-127. Heidelberg: Carl Auer.
Translation of a previous item.

(2001). "Scheme theory as a key to the learning paradox". In A.Tryphon & J.Vonèche (Eds.), Working with Piaget: Essays in honor of Bärbel Inhelder, 139-146. London: Psychology Press.

(2001). "Universalien als Konstruktion (Universals as construction)". In P.M.Hejl (Ed.) Universalien und Konstruktivismus, 68-75. Frankfurt: Suhrkamp.

Foerster, H.von, & Glasersfeld, E.von (2001) Come ci si inventa (How we invent ourselves), Rome: Odradek.
Italian translation of a previous item.

(2001). "The enigma of consciousness", Report on Lucerne Conference. J. of Consciousness Studies, 8(4), 79-81.

(2001). "Was im Kopf eines anderen vorgeht,können wir nie wissen". In B.Pörksen (Ed.) Abschied vom Absoluten (Farewell to the absolute), 46-69. Heidelberg: Carl Auer.
Reprinting of a previous item.

(2001). "Constructivisme radical et enseignement (Radical constructivism and teaching)". In Revue Canadienne de l'enseignement des sciences, des mathématiques et des technologies, 1 (2), 211-222.
>Reprinted in Perspectives, 31 (2), 191-204.

(2001). "Über die Grenzen der Sprache (On the limits of language)". In H.A.Wüthrich, W.B.Winter, & A.Philipp (Eds.) Grenzen ökonomischen Denkens (Limits of economical thought), 5-12. Wiesbaden: Gabler.

(2001). "Was heißt “Lernen” aus konstruktivistischer Sicht? (Learning from a constructivist perspective)". In S.J.Schmidt (Ed.) Lernen im Zeitalter des Internets (Learning in the age of the Internet), 33-44, Bolzano (Italy): Pädagogisches Institut.

(2001). "Stellungnahme eines Konstruktivisten zur Wissenschaft (A constructivist's perspective on science)". In T.Hug (Ed.) Einführung in die Wissenschaftstheorie und Wissenschaftsforschung, 34-47. Hohengehren, Germany: Schneider Verlag.

(2001). "Risposta a Ranci", Working Papers n. 132, 1. Milan, Italy: Società di Cultura Metodologico-Operativa.

(2001). "The radical constructivist view of science", Foundations of Science, 6 (1-3) 31-43.

(2001). "Remembering Gordon Pask", International J. for Human Computer Studies.

(2001). Come ci si inventa, Roma: Odradek.

(2002). Vorwort (Preface). H. von Foerster & Monika Broecker, Teil der Welt (XI-XII). Heidelberg: Carl Auer Verlag.

(2002). "Interview by Reinhard Voss". In: R. Voss (ed.), Unterricht aus konstruktivistischer Sicht (Instruction from a constructivist perspective), 26-32. Kriftel: Hermann Luchterhand.

(2002). "Cybernetics and the theory of knowledge", UNESCO Encyclopedia,, Section on System Science and Cybernetics.

(2003). "Comment on Ryder's 'Science and Rhetoric'", The Pantaneto Forum, April 10/2003.

(2003). "Nota alla postfazione di Accame", Working Papers, 150. p. 1.

(2003). "Foreword". In: M. V. Butz, S. Olivier & P. Gérard (Eds), Anticipatory behavior in adaptive systems: Foundations, theories and systems (v-vi). Berlin/New York: Springer.

(2002). "Preface". B. Pörksen, Understanding Systems. Conversations on Epistemology and Ethics (11-12). Heidelberg/NewYork: Carl Auer/Kluwer/Plenum.

(2003). "Review of Lesh: Beyond constructivism". ZDM, 35(6),325-329.

(2004). "Knowledge without knower?", Karl Jaspers Forum, March 19/2004,

(2004). "Constructivism", In: W. E Craighead & C. B. Ndemeroff, The Concise Corsini Encyclopedia of Psychology and behavioral Science, 219-220, Hoboken, N. J.: John Wiley & Sons.

(2004). "What 'exists'?", Karl Jaspers Forum, April 9/2004,

(2004). "Aggiunta al 'noi' politico", Working Papers, 165. p. 1.

(2004). "Alle radici del costruttivismo radicale (Interview with L.Cardellini)", Informatica & Scuola, 12 (3) 4-8.

(2005). "Metaphern als indirekte Beschreibung", In: H.-R. Fischer (ed.), Eine Rose ist eine Rose, 145-155. Weilerswist: Velbrück Wissenschaft.

(2005). "Thirty years constructivism", Consteructivist Foundations, 1(1).

(2005). "Preface: Founder of the second order", Kybernetes, 34 (3/4) 319-320.

(2004). "Prefazione: Aspetti costruttivistici nei dialoghi di Alexandr Bogdanov", In F. Accame (Ed.) A.A.Bogdanov, Quattro dialoghi su scienza e filosofia, 7-10. Roma, Odradek.

(2005). "Interview mit Reinhard Voss", In: R.Voss (Ed.), Unterricht aus konstruktivistischer Sicht, 32-38, Weinheim/Basel: Beltz.

(2005). "Was heisst Lernen us konstruktivistischer Sicht?", In: In: R.Voss (Ed.), Unterricht aus konstruktivistischer Sicht, 214-223. Weinheim/Basel: Beltz.

  Last update: 2006/06/23