1. Are autistic children “behaviourists”? An examination of their mental–physical and appearance–reality distinctions;Baron-Cohen;Journal of Autism and Developmental Disorders,1989
2. Bishop, D. V. M. 1982, Test for Reception of Grammar, Abingdon, UK, Medical Research Council, Chapel Press.
3. The “natural logic” approach to reasoning;Braine,1990
4. Logical reasoning;Braine,1983
5. The effect of make-believe play on deductive reasoning;Dias;British Journal of Developmental Psychology,1988