Psychology 2080A/B Chapter Notes - Chapter 10: Wechsler Adult Intelligence Scale, Memory Span, Fluid And Crystallized Intelligence

• School: Western University
• Department: Psychology
• Course: Psychology 2080A/B
• Professor: Patrick Brown

Document Summary

Wechsler objected to single score concept offered by 1937 binet scale. Although wechsler test did not directly measure nonintellective factors, it took these factors into account. Because binet scale items were selected for children, wechsler concluded they lacked validity for adults. Also examiner-subject rapport was impaired when adults were tested. Wechsler noted that inet"s emphasis on speed, with timed tasks, handicapped older adults. Also mental age norms did not apply to adults. Finally, wechsler criticized the existing inet scale because it didn"t consider that intellectual performance could deteriorate as a person grew older. Two of most critical differences were: wechsler"s use of point scale concept rather than age scale, wechsler inclusion of non-verbal performance scale. In a point scale, credits or points are assigned to each item. Binet scale was criticized for emphasis on language and verbal skills. To deal with this problem, wechsler included an entire scale to measure nonverbal intelligence: a performance scale.