PSYC37H3 Chapter 10: Chapter 10
Document Summary
Chapter 10: the wechsler intelligence scale: wais-i i i, wisc-iv, and wppsi-i i i. wechsler capitalized on the inappropriateness of the 1937 binet scale as a measure of the intelligence of adults. Because the binet scale items were selected for use with children, wechsler concluded that these items lacked validity when answered by adults. wechsler also correctly noted that the binet scale"s emphasis on speed, with timed tasks scattered throughout the scale, tended to unduly handicap older adults. mental age norms clearly did not apply to adults. wechsler criticized the then-existing binet scale because it did not consider that intellectual performance could deteriorate as a person grew older. Two of the most critical differences between the wechsler and the original binet scales were (1) Wechsler"s use of the point scale concept rather than an age scale and (2) wechsler"s inclusion of a performance scale.
