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Lipkens, Regina; And Others – Journal of Experimental Child Psychology, 1993
Tested a normally developing child several times between 16 and 27 months of age for his ability to derive the relations between stimuli. Found that the child derived "mutual entailment" relations and showed "nonverbal exclusion" as early as 17 months. "Combinatorial entailment" relations and "verbal…
Descriptors: Child Development, Cognitive Development, Language Acquisition, Longitudinal Studies