title: DEVELOPMENT OF FORMAL REASONING ON CONCEPT FORMATION PROBLEMS.
mesh_terms: D000293:Adolescent; D002648:Child; D003210:Concept Formation; D006801:Humans; D007257:Information Theory; D011340:Problem Solving; D013850:Thinking
keywords: ADOLESCENCE; CHILD; CONCEPT FORMATION; INFORMATION THEORY; PROBLEM SOLVING; THINKING