Effects of graded doses of alcohol on speed-accuracy tradeoff in choice reaction time

The inconsistency of previous results concerning the effects of alcohol on reaction time (RT) may be related to possible tradeoffs between speed and accuracy. In the present experiment, complete speed-accuracy tradeoff functions were generated for each of five doses of alcohol (0-1.33 ml/kg) in a choice RT task. Such functions permit RT differences resulting from changes in performance efficiency to be distinguished from those due to changes in subjects’ speed accuracy criteria. Increasing doses of alcohol produced a progressive decrease in the slope parameter of linear equations fit to the speed-accuracy data, but did not significantly alter the intercept of the functions with the RT axis. Thus, alcohol reduced performance efficiency by decreasing the rate of growth of accuracy per unit time. A change in speed-accuracy criterion was combined with the decrease in efficiency at the highest alcohol dose.     

Integration of student development theory into the academic classroom

This paper demonstrates how collaboration among student development educators and university instructors can utilize the content of academic courses to facilitate personal development in adolescent college students. Through an application of Chickering's (1969) seven vectors of human development (which occur during adolescence and early adulthood), this objective was accomplished in a course entitled Drinking and Driving: Legal and Social Aspects. Essay exams were analyzed for self-reported anecdotal behavioral examples of developmental growth attributable to participation in this course. Analysis of the results indicated that the class content had a definite developmental impact on the students, in addition to intellectual growth. By helping academic educators recognize that within their course content and structure they can and do affect adolescents on many developmental dimensions, the end result can be a richer, holistic educational experience for students.     

Impact of conceptions of ability on self-regulatory mechanisms and complex decision making

Tested the hypothesis that induced conceptions of ability as a stable entity or as an acquirable skill would affect self-regulatory mechanisms governing performance in a simulated organization. Ss served as managerial decision makers in which they had to match employees to subfunctions and to discover and apply managerial rules to achieve a difficult level of organizational performance. Those who performed the challenging managerial task under an entity conception of ability suffered a loss in perceived self-efficacy, lowered their organizational goals, and became less efficient in their analytic strategies. Ss who managed the organization under an acquirable skill conception of ability sustained their perceived self-efficacy, set challenging organizational goals, and used analytic strategies effectively. These divergences in self-regulatory factors were accompanied by substantial differences in organizational performance. Path analysis revealed that perceived self-efficacy had both a direct effect on organizational performance and an indirect effect through its influence on analytic strategies. Personal goals also affected organizational performance through the mediation of analytic strategies. The relation of prior organizational performance to subsequent performance was mediated entirely by the combined influence of the self-regulatory factors.     

Effect of perceived controllability and performance standards on self-regulation of complex decision making

Tested the hypothesis that perceived controllability and stringency of performance standards would affect self-regulatory mechanisms governing performance attainments of a simulated organization. Ss who managed the simulated organization under a cognitive set that organizations are not easily controllable displayed low perceived self-efficacy, even when standards were within easy reach, and lowered their organizational goals. Ss who operated under a cognitive set that organizations are controllable maintained a strong sense of self-efficacy, set increasingly challenging goals, and exhibited effective analytic thinking. The divergent changes in these self-regulatory factors were accompanied by large differences in organizational attainments. Path analyses revealed that perceived self-efficacy, which was affected by prior accomplishments, influenced subsequent organizational performance through its effects on analytic strategies. After further experience, the performance system was regulated more extensively and intricately by Ss' self-conceptions of efficacy. Perceived self-efficacy affected subsequent organizational attainments both directly and indirectly through its influence on personal goal challenges. Personal goals, in turn, enhanced organizational attainments directly and through mediation of analytic strategies.     

Development and psychometric properties of the Children's Assertive Behavior Scale

The purpose of this paper is to present the psychometric properties and individual items comprising the Children's Assertive Behavior Scale (CABS). The CABS is a behaviorally designed self-report instrument for children which measures general and specific social skills and covers many socially relevant situations which are problematic for children. Acceptable psychometric properties of the 27-item test were obtained in several independent investigations across both geographical regions and grade levels. The CABS showed significant concurrent validity with peer, parent, and teacher measures of social competency. The CABS also discriminated trained versus untrained children participating in social skills versus a placebo discussion group. The instrument is presented, along with recommendations for future applications and research.Both authors share equal responsibility for the development and evaluation of the Children's Assertive Behavior Scale.     

Warm and cool thresholds as a function of rate of stimulus temperature change

Ss lifted three weights in sequence with instructions to judge the average heaviness of the weights. In agreement with previous work, a recency effect was obtained, with the later weights having more influence on the judgment. In contrast to previous work, a discrepancy was found from predictions based on the hypothesis that the judgment was an average of the felt heavinesses of the weights. The discrepancy had the appearance of a response end-effect, and was eliminable by a scaling procedure based on functional measurement.     

The effect of light intensity when onset or termination of illumination is used as reinforcing stimulus

The Psychological Record - Two experiments were performed to examine the reinforcing effects of onset and termination of non-aversive illumination, made conterminous with lever contacting, as a...     

Confirmation of linear system theory prediction: Rate of change of Herrnstein's kappa as a function of response-force requirement

Four human subjects worked on all combinations of five variable-interval schedules and five reinforcer magnitudes (¢/reinforcer) in each of two phases of the experiment. In one phase the force requirement on the operandum was low (1 or 11 N) and in the other it was high (25 or 146 N). Estimates of Herrnstein's κ were obtained at each reinforcer magnitude. The results were: (1) response rate was more sensitive to changes in reinforcement rate at the high than at the low force requirement, (2) κ increased from the beginning to the end of the magnitude range for all subjects at both force requirements, (3) the reciprocal of κ was a linear function of the reciprocal of reinforcer magnitude for seven of the eight data sets, and (4) the rate of change of κ was greater at the high than at the low force requirement by an order of magnitude or more. The second and third findings confirm predictions made by linear system theory, and replicate the results of an earlier experiment (McDowell & Wood, 1984). The fourth finding confirms a further prediction of the theory and supports the theory's interpretation of conflicting data on the constancy of Herrnstein's κ.     

GENDER ROLE AND POLITICAL OFFICE

Women are less represented in prestigious national political offices than they are in state and local offices. How this underrepresentation may be related to perceived characteristics of office and candidate are explored in the two studies described here. In Study 1, the masculinity/femininity of local, state, and national offices was analyzed; all levels of office were rated as more masculine than feminine. In Study 2, the sex as well as the gender role of a hypothetical presidential candidate was varied. Masculine and male candidates were evaluated as being more competent on presidential tasks such as dealing with terrorism; feminine and female candidates were rated higher on tasks such as solving problems in our educational system. Men, regardless of gender role, were perceived as being more likely to win a presidential election, and masculine tasks were evaluated as being more important than feminine presidential tasks. Implications for future female politicians are discussed.