Various experiments demonstrated that the difficulty level of several performance-type intelligence test tasks is determined directly by stimulus and task variables that vary the information to be processed. The implications of these findings for intelligence and the problems of an experimental approach to the measurement of intelligence are…

Forty-three students participated in a laboratory experiment involving estimation of qualitative similarity between items sampled from ten conventional tests of intellectual performance. Estimated similarity could tentatively be described as a function of positive inter-test correlations as determined from another group of 123 individuals with the…

As predicted, subjects scored higher on subtests of the Wechsler Intelligence Scale for Children which they had rated positively than on those which they had rated negatively. This positive reinforcement value effect supports the purposeful human image advanced by logical learning theory. No racial or social class differences were seen. (Author/CP)

Nine studies are summarized which investigated the relation between attributes of performance as perceived by the subject and corresponding objective measurements. The attributes studied were: (1) intellectual activity perceived to be involved when dealing with a task (Studies 1 and 2), and (2) perceived difficulty (Studies 4 to 9). Study 3…

Significant differences in performance due to task definition were found only on verbal tasks with test instructions yielding superior performance. (Author/RC)

The purpose was to investigate effects of fatigue on intelligence test performance in the elderly. Fatigue effects were investigated by varying number of previous tests, by introducing breaks, and by using a pre-test fatigue-producing condition. The elderly are not as susceptible to test fatigue as previous results suggested. (Author)

The isolation of the components of intelligent performance and applicability of the componential analysis method to tasks other than analogies are discussed. The article also examines the structure of a componential analysis, the precuing method of task decomposition, and new methods for isolating components in a variety of reasoning tasks.…

THIS SERIES OF STUDIES INVESTIGATED THE RELATIONSHIP BETWEEN PERSONALITY ORGANIZATION AND COGNITIVE FUNCTIONING. PART I PRESENTS RESEARCH REPORTS EXAMINING THE RELATIONSHIP BETWEEN EFFICIENCY ON TWO COMPLEX COGNITIVE PERCEPTUAL TASKS AND SEVERAL PERSONALITY DIMENSIONS. IT WAS CONCLUDED THAT COGNITIVE-PERCEPTUAL EFFICIENCY CAN BE RELATED TO…

Findings lend support for further development of the Manikin Construction Task for the purpose of measuring specific conceptual knowledge at all ages. There is also support for its development as an intellectual screening instrument at the 3-year level. (Author)

THE EFFECTS OF TEST ANXIETY AND TEST STRESS ON THE PERFORMANCE OF TWO DIFFERENT INTELLECTUAL TASKS WERE STUDIED. IT WAS HYPOTHESIZED THAT THE DESCRIPTIVE EFFECTS OF ANXIETY WOULD BE GREATER FOR DIFFICULT BUT SIMPLE TASKS THAN FOR COMPLEX BUT EASY TASKS, AND THAT SITUATIONAL STRESS WOULD BE MORE DISRUPTIVE FOR COMPLEX TASKS THAN FOR SIMPLE TASKS. A…