A factor analysis of some clinical performance tests.

Factors underlying Wechsler-Bellevue performance of three neuropsychiatric groups.

“…In the only other published factor analysis of the Wechsler-Bellevue, Balinsky (i) also found the verbal factor to be of signal importance. 5 Of the six age groups studied, it appeared in all but one and was composed, with but slight exceptions, of the same subtests which load it in the present investigation.…”

“…Although this factor operates as a functional unity in the Wechsler-Bellevue, it could probably be further analyzed. A factorial study addressed to a wide variety of clinical performance tests has been presented by Heston (5). Utilizing tests of the same general type as those which comprise the Wechsler-Bellevue Performance Scale, he found three factors: visualizing spatial relationships, speed of movement, and the ability to grasp readily relationships or configurations of a nonspatial nature.…”

Human spatial abilities: Psychometric studies and environmental, genetic, hormonal, and neurological influences.

“…Murphy (1936) factor analyzed scores from numerous verbal, nonverbal, and mechanical tests and concluded that mechanical ability included two factors: Speed of Eye-Hand Coordination and Mental Manipulation of Spatial Relations. Clarke (1936) reported the Spatial factor loadings of spatial and verbal tests to be inversely related among girls ranging in age from 12 to 15 years, a relationship that has been replicated with males as well as females (Andrew, 1937a(Andrew, , 1937bBroverman & Klaiber, 1969;Emmett, 1949;Estes, 1942;Heston, 1943;Morris, 1939;Slater, 1940;Smith, 1938;Swineford, 1948;Thurstone, 1944Thurstone, , 1947Wittenborn, 1945). This relationship is less likely to obtain for spatial-performance tests highly correlated with general intelligence (e.g., the Block Design subtest of the Wechsler IQ scales, or the Kohs Block Design Test that correlates .80 with Binet IQ scores, Kohs, 1923).…”

Predicting Success in Trade and Vocational School Courses: Review of the Literature

“…Harrell concluded that &dquo;each of the factors can be measured with group paper-and-pencil tests&dquo; equally as well as by the more cumbersomely administered apparatus tests. Estes (28) (56), using 113 college students, factored their scores on 18 clinical performance tests, including, among others, Healy Picture Completion II, Kohs Blocks, Digit Symbol, Minnesota Spatial Relations and Minnesota Manual Dexterity. Three significant factors were extracted: (a) spatial (Minnesota Spatial highest); speed (Minnesota Placing and Turning highest); and (c) ability to grasp non-spatial Gestalt relationships.…”