Ennis, R.H. (1978) 'Conceptualization of Children's Logical Competence: Piaget's Propositional Logic and an Alternative Proposal', in L. S. Siegel and C. J. Brainerd (eds.), Alternatives to Piaget: Critical Essays on the Theory. New York, N.Y.
2.
Johnson, G.A. (1976) 'Piaget's Studies on Child Logic and the Validation of Logical Laws', Philosophy of the Social Sciences, 6, 1-13.
3.
Kelly, I.W. (1981) 'Logical Consistency and the Child: A Critical Examination of Piaget's View', Philosophy of the Social Sciences , 11, 15-18.
4.
Piaget, J. (1928) Judgement and Reasoning in the Child. London.
5.
— (1974a) Recherches sur la Contradiction, vol. 1. Paris.
6.
— (1974b) Recherches sur la Contradiction, vol. 2. Paris.
7.
— (1952) The Child's Conception of Number. London.
8.
— (1968) 'The Mental Development of the Child', in D. Elkind (ed.), Six Psychological Studies. New York.
9.
Riley, C.A., and Trabasso, T. (1974) 'Comparatives, Logical Structures, and Encoding in a Transitive Reference Task', Journal of Experimental Child Psychology, 17, 187-203.
10.
Smith, L. (1984) 'Genetic Epistemology and the Child's Understanding of Logic', Philosophy of the Social Sciences, 14, 367-76.
11.
Trabasso, T. (1977) 'The Role of Memory as a System in Making Transitive Inferences', in R. V. Kail and J. W. Hagen (eds.), Perspectives on the Development of Memory and Cognition. Hillsdale, N.J.