On data-limited and resource-limited processes

This paper analyzes the effect on performance when several active processes compete for limited processing resources. The principles discussed show that conclusions about the interactions among psychological processes must be made with caution, and some existing assumptions may be unwarranted. When two (or more) processes use the same resources at the same time, they may both interfere with one another, neither may interfere with the other, or one may interfere with a second without any interference from the second process to the first. The important principles are that a process can be limited in its performance either by limits in the amount of available processing resources (such as memory or processing effort) or by limits in the quality of the data available to it. Competition among processes can affect a resource-limited process, but not a data-limited one. If a process continually makes preliminary results available even before it has completed all its operations, then it is possible to compute performance-resource operating characteristics that show how processes interact. A number of experiments from the psychological literature are examined according to these processing principles, resulting in some new interpretations of interactions among competing psychological processes.     

Verbal-vocal integration as a function of sex and methodology

The process by which persons appear to combine content and intonation to form an impression of a speaker's friendliness may be a function of sex and the analytical techniques used to evaluate the models. Sixty subjects (half male, half female) from the campus population were asked to rate the content, tone, and total message of short sentences from male speakers. Analysis of variance and regression analysis were used to evaluate Linear, Multiplicative, Minimum, and Maximum models. Responses were essentially linear, although the multiplicative component was significant in some results, and the Minimum model received some support for males. More weight was given to tone than content, especially by females and for inconsistent messages. Idiographic analysis proved superior to normative analysis, and the ignored content method provided greater reliability and explanation than previously used filtered speech.     

The latent structure of occupations

Triads of occupations were given to 1300 high-school pupils of both sexes in order to find the affinities of the occupations and the values they used to arrive at the affinities. The values used to perceive occupations come from the subject; nevertheless they could be categorized into a scheme of 20 different values, with the residue category containing less than 1% of the answers. In accordance with previous research in this field, an almost universal structure of occupations was found. The following variables had no influence on the choice of occupational affinities: age, trend of study, SES, father's occupation, mother's occupation, vocational maturity, and preferred occupation. Only the pupils of one school were significantly different in affiliating the occupations in the triads. Furthermore, girls perceive the world of occupations more uniformly than boys.Underlying this universal structure of occupations there exists a latent structure, specific to each individual, which explains why the world of occupations is seen in the way it is. This latent structure of occupations is influenced by the individual's specific background.     

Expressed vs inventoried interests as predictors of paramedical effectiveness

Two interest measures, a composite of six items which provide a direct assessment of an individual's preferences for Navy health care work and a Navy Vocational Interest Inventory (NVII) scale which assessed the degree of similarity between an individual's activity preferences and those of hospital corpsmen (HMs), were considered along with aptitude test scores as potential predictors of effectiveness among 2429 Navy enlisted personnel assigned to training for HM jobs. Effectiveness was defined as completion of HM training and remaining on the job for at least 2 years. The six-item composite and NVII HM scale scores were correlated .51 with each other and were correlated .27 and .28, respectively, with the effectiveness criterion. When these measures were added to the aptitude measure by using multiple regression procedures, the validity for predicting effectiveness was increased significantly from .36 to .42 with a cross-validity of .42 for the three-variable equation. These findings provide support for the contention that interest measures can be useful predictors of occupational success as well as occupational entry. Furthermore, since most of the interest-related attrition that was found in this study occurred during HM training, these findings suggest that job withdrawal attributable to mismatches in vocational interests may tend to occur very soon after the individual enters the occupational field.     

Classes and collections: Conceptual organization and numerical abilities

Collections (e.g., forest, army) and classes (e.g., trees, soldiers) are natural concepts that differ in their organizational principles. Collections are organized into part-whole relations (e.g., trees are parts of a forest). Classes are organized according to class inclusion relations (e.g., oaks are kinds of trees). Because of their part-whole organization, collections are assumed to have greater psychological coherence than classes and therefore an advantage on tasks that require thinking about an aggregate as well as the individuals in it. Number requires aggregate analysis since it is a characteristic of sets, not of individuals. Four studies tested the hypothesized collection advantage in numerical reasoning tasks. In each, children viewed identical displays that were labeled with either class or collection terms. With perceptual input constant, the collection labels in contrast to the class labels promoted children's insight into certain numerical principles and facilitated the use of these principles in a variety of numerical tasks. Collection labels appear to induce a cognitive reorganization of importance to the child: the shift from inclusion to part-whole relations.     

The effects of differential reinforcement on generalized imitation

The present study examines the transfer of imitative learning to other nonimitative performance conditions and compares imitative and nonimitative performance under contingencies of differential reinforcement for S⁰ behavior, differential reinforcement for nonimitative behavior, and extinction. Many authors have suggested that a child's continued imitative performance of rewarded S^D and unrewarded S^Δ behavior is a function of subtle social cues or experimental demand present in most generalized imitation procedures. The two experiments presented here support that conclusion but also provide evidence that conclusions drawn from such generalized imitation studies were generally accurate. Even though a child's trial-by-trial imitative performance appeared to be a function of procedural artifacts, the child's later performance in the role of a model indicated that a functionally interdependent generalized response class of imitative behavior had been learned while the child imitated. As such, these experiments generally supported Baer's secondary reinforcement hypothesis for imitative performance and suggest that future research employ nonimitative tasks such as reversed imitation as a measure of imitative learning.     

The relation of esteem and social class to self-occupational congruence

The relation of self-esteem and social class to congruence with chosen occupation (the incorporation score) was analyzed by ANOVA and a priori contrasts. Fifty-four accounting majors were differentiated from 58 non-accounting, business majors on the basis of their ideal-self-accounting congruence (p < .01) and their self-accountant congruence (p < .05). Both high- and low-esteem accounting majors' congruence scores for accountant were higher than other S's accountant congruence, and high-esteem accounting majors had the highest congruence (p <.05). Working class accounting majors had higher congruence than middle class accounting students (p <.05). The implications of the findings for theory development and counseling were discussed.