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A new accelerated intelligence test is presented which is known as the multiple selection vocabulary test B. This is a very objective and reliable test measuring the general level of intelligence. The time of testing will be about three to five minutes in the case of persons that are free of any psychiatric disorders. Test results will be only negligibly influenced by psychic and mental disorders.
It was hypothesized that there is a correlation between IQs on the Kahn Intelligence Tests and the WAIS. It was predicted that the correlation between the KIT IQs and the WAIS Performance IQs would be significantly higher than those between the KIT IQs and WAIS Verbal and Full Scale IQs. The KIT and WAIS were administered to 30 Negro and 20 white offenders ages 16-0 to 20-11. Pearson rs of .656, .649, and .714 were significant. Contrary to prediction, the r between the KIT IQs and the WAIS Performance was the lowest. Mean IQs were significantly different.
The purpose of the study was to investigate effects of fatigue on intelligence test performance in the elderly. Dependent variables were Verbal Comprehension, Numerical Facility, Perceptual Speed, and Word Fluency tests. Fatigue effects were investigated by varying the number of previous tests administered, by introducing breaks between tests in some conditions, and by using a pre-test fatigue-producing condition, a modified form of the Finding A's test. Subjects' ages were between 57 to 91-years. It was hypothesized that the Finding A's test would be more fatiguing than a long battery of tests and that introducing a break condition between the Finding A's test and the main battery would alleviate fatigue effects. Analyses of Variance resulted in a main effect due to a pre-test condition for the Perceptual Speed test only, and only when the main battery was preceded by the Finding A's task (p less than .001). It appears that the elderly are not as susceptible to test fatigue as previous results seemed to suggest.
This study examined the effects of contingent verbal and nonverbal reinforcement upon the intelligence test performance of bladk adults. Thirty-six Ss (half male and half female) were pretested on the Quick Test and then administered the complete WAIS under one of three treatment conditions: verbal reinforcement, nonverbal reinforcement or no reinforcement (control condition). Verbal reinforcement was administered as statements of "good" or "fine" by the E, while nonverbal reinforcement took the form of a nod of the head or a statement of "Mmhm." The primary analysis of the data indicated no significant differences between the treatment conditions.
Thirty-six mentally retarded adolescents were administered the Wechsler Intelligence Scale for Children (WISC), the Peabody Picture Vocabulary Test (PPVT), and the Slosson Intelligence Test (SIT) to determine reliability and comparable performance among the three intelligence tests. Correlations as a function of IQ and MA, by sex, were computed among the three tests. All were significant (p less than .01), but the WISC and SIT had consistently higher relationships than any other comparisons on both IQ and MA. Analyses also indicated that the PPVT produced higher IQ scores than the WISC or SIT and that MA in the PPVT was influenced by the previous administration of the SIT. It was concluded that, as a screening device, the SIT is more reliable and approximates WISC scores more consistently than the PPVT.
Even short tests can still be materially shortened when they are intended to provide rough information. An example of a short intelligence test shows that considerable reductions are permissible when the procedure is intended to classify subjects into IQ groups of roughly "under 100" or "over 100". Also division into three as below average, average and above average level of intelligence is possible, and also division into four grades. If about 85% accuracy is satisfactory, a three-problem test is sufficient. For grading into three and four parts, six and nine problems, respectively may be adequate.
Any relationship between measures of cognitive function and brain electrical activity would be of considerable importance in the objective assessment of patients suspected of intellectual impairment. In healthy subjects, we have found a strong correlation between the event-related potentials evoked by a digit probe identification task and scores on intelligence tests (WAIS). Responses from subjects with higher performance on IQ tests are significantly 'more negative' than those from subjects with lower IQ. The characteristics of these IQ-dependent electrophysiological features suggest that they may be related to the subject's ability to focus on a task.
Hardy, Welcher, Mellitis, and Kagan altered standard WISC administrative and scoring procedures and, from the resulting higher subtest scores, concluded that IQs based on standardized tests are inappropriate measures for inner-city children. Careful examination of their study reveals many methodological inadequacies and problematic interpretations. Three of these are as follows: (a) failure to use any external criterion to evaluate the validity of their testing-of-limits procedures; (b) the possibility of examiner and investigator bias; and (c) lack of any comparison group that might demonstrate that poor children would be helped more than others by the probes recommended. Their report creates misleading doubts about existing intelligence tests and does a disservice to inner-city children who need the benefits of the judicious use of diagnostic procedures, which include standardized intelligence tests. Consequently, their assertion concerning the inappropriateness of standardized test results for inner-city children is not only premature and misleading, but it is unwarranted as well.
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