An item analysis of the Wechsler-Bellevue tests.

Jastak, Joseph

doi:10.1037/h0062069

Cited by 19 publications

(19 citation statements)

References 2 publications

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“…This study, with these concerns in mind and an eye toward changes where necessary, sought to determine whether the order of difficulty within each of the subtests from a sample other than that of standardization coincided with the order prescribed by Wechsler. Similar studies on other Wechsler scales (Carleton & Stacey, 1955;Jastak, 1950;Jastak & Jastak, 1964;Wechsler, 1958) have suggested that the order of subtest question difficulty is dependent on the sex of the subject. Therefore, it was decided to study the subtests to determine if questions might need to be reordered for a total sample and whether or not questions were ordered appropriately for each sex.…”

supporting

confidence: 62%

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The Wechsler Preschool and Primary Scale of Intelligence: Difficulty order of subtest questions

Cooley¹

1977

Psychol. Schs.

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Theoretically and pragmatically the subtest questions of the Wechsler Preschool and Primary Scale of Intelligence are assumed to be ordered from least to most difficult. The purpose of this study was to test whether or not the order was appropriate for a sam le other than that used for standardization. Data consisted of test records or89 females and 62 males tested at a private school over four years. Mean Full Scale I& of the sample was 118. Calculation of proportion of the sample prtssing each item and Guttman Reproducibility Coefficients fcr each subtest suggested changes in the order of questions of the Vocabulary, Picture Completion, Similarities, and Comprehension Subtests. However, though questions were misorderd for the present sample as a result of presenting them in the order prescribed in the test manual, the misordering was not great enough to seriously affect subtest scores or the interpretation of intratest scatter.The administration and scoring of the widely used Wechsler Intelligence Scales are based on the assumption that the questions within each subtest are ordered from least to most difficult. The present study was designed to test that assumption for the Wechsler Preschool and Primary Scale of Intelligence (WPPSI).In developing his scales, Wechsler (1958), an adherent of point scale intelligence measurement, placed subtest questions in ascending order of relative difficulty according to the frequency with which each question was answered correctly by the standardization sample. But he warned that the order of difficulty could be affected by sex of the subject, his geographical location, age> and national origin. Therefore he suggested that an examiner could proceed beyond generally adopted subtest termination points as long as caution was exercised not to violate the norms of the examination. Authors studying the WPPSI's predecessors have suggested that subtest items are not in proper ascending order and have voiced clinical misgivings. Jastak (1950) studied the frequency of correct responses to WB-I subtest questions and found that deviations of item difficulty were common enough to impede the economy and ease of testing, to make the setting of reasonable limits for individual testing difficult, and to hamper accurate derivation of intratest scatters.

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supporting

confidence: 62%

“…Based on previous work in this area (Carleton & Stacey, 1955;Jastak, 1950), no partial credit was given for any question. From the record blank any response which had received a score of one or more points when the test was administered received a score of one for analysis; any question which was scored zero received a score of zero.…”

Section: Methodsmentioning

confidence: 99%

The Wechsler Preschool and Primary Scale of Intelligence: Difficulty order of subtest questions

Cooley¹

1977

Psychol. Schs.

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“…A preliminary investigation ( I ) using male psychiatric patients indicated that the Shipley-Hartford (SH) serves as an accurate screening test in this regard, since of the 23 subjects obtaining at least an average SH Total I&, all of them achieved the same or a higher level on an abbreviated Wechsler-Bellevue, Form I. The SH (2) consists of a 40 item multiple-choice Vocabulary subtest (10 min.) and a 20 item Abstract Thinking subtest (10 niin.).…”

Section: Problemmentioning

confidence: 99%

Standardization of the Wechsler Adult Intelligence Scale for older persons.

Doppelt¹,

Wallace²

1955

The Journal of Abnormal and Social Psychology

165

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A critique of Wechsler's deterioration formula for the WAIS is offered because it neglected the important matter of significant sex differences in intellectual abilities and because it did not make optimal use of the differential test score method. Two revised formulae were devised, one for males and one for females. The female formula was much more successful than Wechsler's in maximizing deterioration slope. Recommendation is made to use the WAIS formula for men and the revised formula for women.

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“…The analysis procedure of the present study is similar to that used by Jastak (2) in his investigation of the Wechsler-Bellevue. The analysis procedure of the present study is similar to that used by Jastak (2) in his investigation of the Wechsler-Bellevue.…”

mentioning

confidence: 99%