Individual Differences in visual imagery and spatial ability

Spatial ability is generally assumed to involve construction, transformation, and interpretation of mental images. To explore the relationship between spatial ability and both image quality and image process efficiency, 79 subjects performed eight spatial tests, completed three imagery questionnaires, and participated in six laboratory tasks. These laboratory tasks were devised to measure image quality and the efficiency of image generation, image rotation, image scanning, adding and subtracting detail in images, and integration of images. Although ratings of imagery control and vividness were unrelated to spatial test performance, laboratory measures of process efficiency and image quality were strongly related to spatial test performance and weakly related to one another. A structural equation model identified a single spatial factor, Visualization ability, that can be decomposed into unique variance plus a linear combination of measures of image quality and image process efficiency. An interpretation of this model is that successful performance on spatial tests requires maintenance of a high-quality image and efficient image transformation and inspection processes.     

The relation of congruence,differentiation, and consistency to interest and aptitude scores in women with stable and unstable vocational choices

This study examined by canonical variate analysis the relation between congruence, differentiation, and consistency, and academic aptitude and vocational interests for 280 women with stable vocational choices over 4 years and 327 women with unstable vocational choices over 4 years. Findings offered support for the importance of congruence in stable women; differentiation and consistency operated similarly for women with stable and unstable choices.     

Intensity and orientation of reasoning: Motivational determinants of children's compliance to verbal rationales

The effects of varying the motivational content of verbal rationales on children's compliance to a prohibition were investigated. Sixty-four 7- to 10-year-old children received an explanation that focused either on the consequences of their behavior for themselves or on the consequences of their behavior for the experimenter. The intensity of these explanations was manipulated verbally by varying the severity of the self- or other-oriented consequences. Preratings of the rationales by an independent sample of 42 children indicated that children's perceptions of the aversiveness of the rationales increased as a function of intensity. Intensity was a determinant of children's compliance but females were more likely to increase in resistance to deviation as a function of intensity than males. Children who received other-oriented rationales performed a greater amount of work and were less likely to show decrements in working over time than subjects who received self-oriented rationales. The results were explained in terms of a model of reasoning effects in which the kind and amount of motivation aroused are two separable determinants of children's compliance.     

A strong developmental theory of field dependence-independence

Assume an X-linked gene in two alleles mediates performance on field dependent-independent tests such as the rod-and-frame test. Only the recessive gene with relative frequency q facilitates field independence. Other genotypes lead to field dependence. Under a simple genetic model, field dependence-independence may be viewed as outcomes of a discrete random variable B with field independent and dependent probabilities π_iq and 1 ? π_iq for men, and π_iq² and 1 ? π_iq² for women, respectively. The parameter π_i is a maturational ageindexed parameter, 0 < π_i ≤ 1, monotonically increasing with development until maturity when π_k = 1. Observations of performance are made on a random variable W of the form W = B + N, where N is normal in distribution independent of B; N represents a composite of influences including error. The model implies testable age-related between- and within-sex predictions regarding E(W) and Var(W), predictions which appear to coincide with major empirical findings; it also generates novel predictions. For instance, W is a mixture of normals distribution. The model is briefly evaluates in two data sets.     

The composite measure of the defense mechanism inventory

A reanalysis of previously published data suggests that the Defense Mechanism Inventory can be utilized to yield a composite measure of reaction to frustration by contrasting linearly the defenses of Turning-against-object and Projection against those of Principalization and Reversal-of-affect. Factor-analytic and correlational data support the exclusion of Turning-against-self from the composite measure. Studies of content validity are presented for the combination of the four defenses into one dimension. Patterns of interitem reliability are charted for the five defenses and the composite measure for both men and women. Internal consistency data are also presented for the standard scoring as well as for a modified method to explore the feasibility of simplifying and shortening the test-taking procedure.     

Occupational perceptions of academic disciplines

This study investigated the way in which various academic disciplines are viewed by students with respect to their “specificity,” i.e., the degree to which each is related to all occupations after graduation, and their “utility,” i.e., the extent to which each facilitates obtaining employment after graduation. A consensus concerning the specificity and utility of 17 academic disciplines was found for a sample of 485 sixteen- to eighteen-year-olds. This consensus was reliably demonstrated on other independent samples; nevertheless, some differences between individual disciplines were found as a function of sex and type of school attended.     

Word production and comprehension in Alzheimer's diseáse: The breakdown of semantic knowledge

Relatively mildly impaired patients with suspected Alzheimer's disease (N = 14; Verbal IQ = 96) and normal controls of similar age and education (N = 11) were administered tests requiring production (naming and fluency) and comprehension of single words. Word comprehension was assessed on a superordinate level (rating words for degree of “pleasantness”) and on a more specific level (matching abstract pictorial representations with printed words denoting objects, actions, emotions, and modifiers). Performance on standardized measures of semantic knowledge (Vocabulary and Similarities subtests of the WAIS) was also evaluated. The naming and fluency abilities of the Alzheimer's patients were found to be highly correlated (r = .80) and impaired. Naming errors often consisted of semantic field errors which were either hierarchically or linearly related to the target name. In comparison with normals, verbal fluency was characterized by a tendency to generate proportionally more category names concurrent with reduced production of items within a category. Single-word comprehension was also impaired, except when judgments of affective meaning were required. It was argued that these results suggest that Alzheimer's disease may lead to a specific disruption in semantic knowledge characterized by a difficulty in differentiating between items within the same semantic category concurrent with the relative preservation of broader categorical information.     

Primary influencers of initial vocational choices for college women

This study of 597 entering college women investigated the characteristics of people they named as the primary influencers for their initial choices of major. College major was considered analogous to vocational field since the sample of students overwhelmingly gave career goals as reasons for choosing a particular major. Characteristics of these primary influencers were compared with those of a sample of individuals influencing male choices. In addition, characteristics of influencers were compared between those influencing females choosing traditional and nontraditional majors. The results indicate that most students, regardless of gender, were influenced by males, particularly fathers. However, a notable percentage of female students, especially those in traditional fields, were influenced by females. Students whose primary influencers were in fields closely related to their own vocational choices reported being more certain of their choices than students citing influencers in unrelated fields. These findings have implications for model-observer similarity, and may necessitate distinguishing between influential people who provide reinforcement for a choice of major and those who provide specific vocational modeling as well as reinforcement for that choice.     

Sex differences in retention of verbal and spatial characteristics of stimuli: A cross-cultural replication

This study is a partial (omitting college students) replication of R. V. Kail and A. W. Siegel (Journal of Experimental Child Psychology, 1977, 23, 341–347) in Ghana and Scotland on boys and girls with 4 and 7 years of education. After viewing sets of five or seven letters in a 4 × 4 matrix they remembered either (a) the letters, (b) positions of the letters, or (c) both letters and positions. Contrary to the results of the original study, no sex difference in relative recall of letters and positions was found. There was also evidence that verbal and spatial information is not always processed independently. A prediction that Scottish children would have better recall of positions was supported. The discussion notes the limitations of intracultural research as a basis for generalizations.