Avoidant control difficulty and aversive incentive appraisals: Additional evidence of an energization effect

There is evidence that certain physiological and subjective indices of stress are relatively great when control over aversive outcomes is moderately difficult and relatively reduced when control over such outcomes is either easy or impossible. A possible explanation is suggested by Brehm's recent theory of motivation, which asserts that energy mobilization and the perceived unpleasantness of an aversive event will (a) increase with the difficulty of avoidant behavior so long as avoidance is believed to be possible and worthwhile, and (b) be low when avoidant behavior is impossible, not worthwhile, or simply unavailable. This article reports two experiments that examined appraisals of an aversive incentive under conditions where avoidance was expected to be easy, difficult, and impossible. The first demonstrated the complete nonmonotonic pattern of appraisals predicted by the energization theory, something that has proved elusive in previous investigations. The second study demonstrated this as well and, in addition, showed a correspondence between subjects' incentive appraisals and their cardiovascular responses immediately before and during an avoidance task period. Implications and alternative interpretations are discussed.This research was supported in part by a Faculty Research Award from the University of Alabama at Birmingham.     

Class,powerlessness and political polarization

It is proposed that perceptions of powerlessness influence attitudes towards political policies and ideologies, and that these attitudes influence levels of support for political parties. A cross-sectional survey analysis of the relations between social class, powerlessness, ideology, and party preference supports this contention. However, the role of powerlessness in influencing the appeal of political attitudes is found to be conditional on respondents' social class. For middle class respondents, powerlessness is associated with opposition to economic redistribution, whereas for the working class it is associated with pro-redistributive attitudes. For respondents in all classes, powerlessness is associated with authoritarian beliefs, but these are only of relevance for the partisanship of respondents in the middle class. As a consequence of this pattern of relationships, powerlessness is associated with political polarization between social classes, which takes the form of increased support for the Conservative party in the middle class and increased support for the Labour party in the working class. Apart from their substantive implications these findings illustrate the importance of social structural characteristics in conditioning the relationships between social psychological variables.     

Theory matrices (for modal logics) using alphabetical monotonicity

In this paper I give conditions under which a matrix characterisation of validity is correct for first order logics where quantifications are restricted by statements from a theory. Unfortunately the usual definition of path closure in a matrix is unsuitable and a less pleasant definition must be used. I derive the matrix theorem from syntactic analysis of a suitable tableau system, but by choosing a tableau system for restricted quantification I generalise Wallen's earlier work on modal logics. The tableau system is only correct if a new condition I call alphabetical monotonicity holds. I sketch how the result can be applied to a wide range of logics such as first order variants of many standard modal logics, including non-serial modal logics.     

Standard Score Comparison 2.0: Second-generation learning disability regression software

As states increasingly adopt actuarial models to aid learning disability (LD) identification, microcomputer programs are being used to accurately measure the primary LD criterion: severe discrepancies between IQ and achievement. First-generation programs offered little flexibility in regression parameters and user-defined options. This paper describes Standard Score Comparison 2.0 (SSC 2.0), a second-generation regression program that calculates multiple discrepancies, and provides options for Type I error rates, SEM confidence levels, correction for multiple comparisons, and the cut-off value that defines severe discrepancy. Application of SSC 2.0 to non-LD areas and potential features of third-generation software are discussed.     

Robust multidimensional scaling

A method for multidimensional scaling that is highly resistant to the effects of outliers is described. To illustrate the efficacy of the procedure, some Monte Carlo simulation results are presented. The method is shown to perform well when outliers are present, even in relatively large numbers, and also to perform comparably to other approaches when no outliers are present.This research was supported by Grant A8351 from the Natural Sciences and Engineering Research Council of Canada to Ian Spence.     

A Monte Carlo study of the effects of correlated method variance in moderated multiple regression analysis

It has been suggested that hierarchical regression analysis provides an unambiguous conclusion with regard to the existence of moderator effects (Arnold & Evans, 1979). This paper examines the impact of correlated error among the dependent and independent variables in order to explore whether or not artificial interaction terms can be generated. A Monte Carlo study was performed to investigate the effects of correlated error on noninteraction and interaction models. The results are clear-cut. Artifactual interaction cannot be created; true interactions can be attentuated. Some practical suggestions are provided for drawing inferences from hierarchical regression analysis.     

THE THEOLOGICAL DEBATE OVER HUMAN ENHANCEMENT: AN EMPIRICAL CASE STUDY OF A MEDIATING ORGANIZATION

For most theologians, theology should ultimately be used by the laity and/or the public. However, the religion and science debate has not focused on the divide between theologians and the laity. In this case study I examine the debate among theologians about human enhancement. I focus on the extent to which the structure of the debate in a “mediating organization” between the theologians and the public coincides with the structure of the debate among the theologians. I conduct a survey of participants in the organization, and find that the basic divides among the theologians are largely replicated. These results, when combined with studies of the theologians themselves and the laity, provide a more holistic understanding of the future debate about human enhancement.     

Retrospective revaluation effects in the conditioned suppression procedure

In four experiments using the conditioned suppression procedure, rats received initial reinforced training with two compound stimuli, AX and BY, each compound consisting of one auditory and one visual element. After a second phase of training consisting of nonreinforced presentations of A, the suppression governed by X and Y was tested. In Experiment 1 X evoked slightly less suppression than Y (a mediated extinction effect). This outcome was obtained when the auditory cues served as Xand Y(Experiment 1a), when the visual cues served as Xand Y(Experiment 1b), and when the number of nonreinforced presentations of Awas increased (Experiment 1c) from 18 to 216. In Experiment 2, however, in which the initial training was given with serial compounds (i.e., A ⇒ X and B ⇒ Y) X evoked more suppression than Y (a recovery-from-overshadowing effect). It was argued that extinction of A engages two learning processes, one increasing the effective associative strength of its associate (X) and one reducing it, and that the balance between these two depends on the specific conditions of training.