On intelligence II: A neo-Spearman model to replace Cattell's theory of fluid and crystallized intelligence

While many empirical studies now support second-order simple structure factor analytic distinctions consistent with Cattell's theory of fluid and crystallized intelligence, the hierarchical order analyses carried out in the present study show that these factors are structured so as to suggest a neo-Spearman hierarchical model where fluid intelligence is equivalent to a general intelligence factor and broad group factors of verbal-educational knowledge, speediness, and visualization appear. The two models have different implications regarding the status of the fluid and crystallized "intelligence" factors and the relationship between them.     

Measuring Manual Dexterity with the GATB: Wooden versus Plastic Pegboards

As part of a ten-year longitudinal study of vocational development being conducted in the Department of Vocational Education at The Pennsylvania State University, it was decided to administer the GATB to an entire ninth grade class of 1,050 boys and girls. Because both wooden and plastic pegboards were being used to assess GATB aptitude manual dexterity (M), it was decided to compare the scores obtained on the two different types of boards. Results of the study indicate that those students who were tested using the wooden boards performed significantly better than did students tested on the plastic boards. Converted score differences for aptitude M ranged from 3 to 26 points with an average difference of 11 points.     

The Experience of Underemployment

The authors conducted an exploratory study of male college graduates who experienced underemployment to discover significant events occurring during this experience and the feelings attached to those events.     

THE EFFECTS OF ITEM CONTEXT IN FAKING PERSONNEL SELECTION INVENTORIES1

Little is known about the fakability of empirically developed measures when such measures are removed from their original instrument or battery for use in selection decisions. A research design was created that experimentally induced motivation similar to that in employment settings. Experimental group subjects were randomly assigned to two conditions. One condition required S's to complete the entire Strong Vocational Interest Blank while the other condition required subjects to complete only those items which are scored on the psychologist's scale. When results of the two conditions were compared for the “motivated” subjects, those presented with the psychologist scale items only obtained significantly higher scale scores than those who completed the entire SVIB. Although additional research on other instruments should be conducted, these results indicate caution in the practice of retaining only the valid scale items for instruments used in employment settings. While maintaining the original context does not totally eliminate the problem of response distortion it makes the problem much less pronounced.     

Capitalization on chance: The case of Guilford's Memory Abilities

Reanalysis of a memory study originally interpreted to support J. P. Guilford's Structure-of-Intellect (SI) model fails to give support for the SI distinctions: (1) When capitalization on chance was limited by selecting a subsample of variables for analysis, only 3 out of 9 hypothesized factors were identified, (2) the root-one number-of-factor criterion indicate that the SI model leads to a rather dramatic over-factoring even when the factors are theoretically over-determined, and (3) although the fit to the model is somewhat better than is expected on the basis of a completely random model, more reasonable semi-random null-hypotheses cannot be rejected in favor of the SI model.     

A developmental study of relations between free recall, cued recall, and recall of incidental material

Six-, 9-, 17–19-, 45–55-, and 65-year-old subjects were shown 16 slides depicting one colored object and two uncolored context objects in a common setting, the task being to learn the names of the colored objects. Free and cued recall of both colored and context items were tested, the context objects being used as retrieval cues for the colored ones, and vice versa. The relative superiority of cued recall to free recall decreased regularly with increasing age. In the oldest subjects the level of free recall of TBR-objects was still fairly high, the level of recall of context objects being very low. The results support the hypothesis that adults encode nominally irrelevant context materials to a decreasing extent with increasing age, and that memory traces of young people in this sense are "richer", i.e., contain a greater number/variety of potential retrieval cues, than those of the elderly.     

Involvement in four future events as a function of temporal distance

Abstract.— A total of 91 Swedish high-school students, in four groups, estimated their degree of involvement in each of 4 potential future events, which were assumed to occur at 5 alternative points in time within the next 75 years. In addition, estimates were made of the relative importance of the events as well as of their subjective probability and influenceability. Factor analysis revealed two different time-involvement relations: (1) involvement decreasing slowly with increasing temporal distance for the two next decades. and then rapidly approaching zero, and (2) involvement decreasing rapidly for the nearest decades, and then slowly approaching an asymptotic value. Subjects representing the first trend gave consistently higher estimates of event probability. Relative involvement for the events was judged differently by subjects in natural-science and social-science lines of education.