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Download full textPearl, Joseph H. – 1970
Investigating the effects of marijuana on human psychological functioning, this study differs from previous research in two ways: 1) it is concerned with relatively complex cognitive processes; 2) it has a theoretical rationale. The general hypothesis of the study states that marijuana will impair its user's ability to form and use abstract…
Descriptors: Abstract Reasoning, Cognitive Processes, Concept Formation, Marihuana
Peer reviewedPring, Linda – International Journal of Rehabilitation Research, 1989
Performance of congenitally blind children and blindfolded children was compared on tasks requiring spatial reasoning and shape recognition. Blind subjects performed at least as well as blindfolded subjects on simple two-dimensional tactual processing tasks, but less well on more complex tasks requiring them to store, compare, and label objects.…
Descriptors: Abstract Reasoning, Blindness, Cognitive Processes, Congenital Impairments
