Contrasting effects of feature-based statistics on the categorisation and basic-level identification of visual objects

Conceptual representations are at the heart of our mental lives, involved in every aspect of cognitive functioning. Despite their centrality, a long-standing debate persists as to how the meanings of concepts are represented and processed. Many accounts agree that the meanings of concrete concepts are represented by their individual features, but disagree about the importance of different feature-based variables: some views stress the importance of the information carried by distinctive features in conceptual processing, others the features which are shared over many concepts, and still others the extent to which features co-occur. We suggest that previously disparate theoretical positions and experimental findings can be unified by an account which claims that task demands determine how concepts are processed in addition to the effects of feature distinctiveness and co-occurrence. We tested these predictions in a basic-level naming task which relies on distinctive feature information (Experiment 1) and a domain decision task which relies on shared feature information (Experiment 2). Both used large-scale regression designs with the same visual objects, and mixed-effects models incorporating participant, session, stimulus-related and feature statistic variables to model the performance. We found that concepts with relatively more distinctive and more highly correlated distinctive relative to shared features facilitated basic-level naming latencies, while concepts with relatively more shared and more highly correlated shared relative to distinctive features speeded domain decisions. These findings demonstrate that the feature statistics of distinctiveness (shared vs. distinctive) and correlational strength, as well as the task demands, determine how concept meaning is processed in the conceptual system.     

Of Prophets and Propaganda: An Exploration of Modern Christian Dispensationalism Using the Work of Martin Riesebrodt

Modern dispensationalism in the United States has been a thorny sociological problem. The sociodiscursive mechanism(s) by which dispensationalist preachers are able to propagate their message has yet to be determined. The theoretical work of Martin Riesebrodt, specifically his discussion of salvific demand, legitimation, and discursive and behavior‐regulating practices, sheds light on Tim LaHaye and Jerry Jenkins's best‐selling Left Behind series and the equally popular dispensationalist writings of John Hagee. Dispensationalists create a demand for their message through the interpretation of current events using the apocalyptic lens of the dispensational scenario, which points to the imminence of the rapture and the global doom that will follow. As part of the propagandizing discourse (discursive practices) that promises escape from this cataclysm, dispensationalists preach a set of behavior‐regulating practices that seek to constrain and control the actions of their adherents.     

Efficient spatio-temporal data mining with GenSpace graphs

We describe a method for spatio-temporal data mining based on GenSpace graphs. Using familiar calendar and geographical concepts, such as workdays, weeks, climatic regions, and countries, spatio-temporal data can be aggregated into summaries in many ways. We automatically search for a summary with a distribution that is anomalous, i.e., far from user expectations. We repeatedly ranking possible summaries according to current expectations, and then allow the user to adjust these expectations. We also choose a propagation path in the GenSpace subgraph that reduces the storage and time costs of the mining process.     

Adolescent Adjustment and Coping Strategies

This study examines the relation between psychosocial adjustment and coping strategies among college freshmen. Three hundred thirty-one college students completed the Inventory of Psychosocial Development (IPD; Constantinople, 1969) and the Adolescent Coping Orientation for Problem Experiences (ACOPE; Patterson & McCubbin, 1987) inventory. Factor analysis of the ACOPE scales revealed two factors interpreted to represent the coping strategies of "salutary effort" and "stress palliation." For each subject a relative salutary effort score was calculated to reflect the proportion of coping efforts ascribable to mature, salutary coping efforts. Optimal adjustment was associated with adolescents whose reported means of dealing with tension reflected a high proportion of salutary effort. These findings, which support the notion of a covariation between styles of coping and psychological adjustment among adolescents, are discussed in light of psychosocial development, coping, and methodological issues related to research on coping and adjustment.     

Rehearsing for confrontation

Social confrontation is a particular kind of communication episode which may be initiated when one actor signals another actor that his or her behavior has violated (or is violating) a rule or expectation for appropriate conduct within the relationship or situation (Newell & Stutman, 1988). This paper explores the decision, structure and process of rehearsing for confrontation. Intensive interviews with 75 actors followed by a questionnaire administered to 99 others revealed that confronters maintain two strands of confrontative goals: strategic and performance goals. Strategic goals for confronters include (a) influence, (b) catharsis, (c) relational maintenance, (d) retribution, and (e) enhanced understanding of the other. While these goals lead to different tactical outcomes, actors also hold intentions related to performance goals. Two performance goals are of central concern to some actors: (a) the desire to be argumentatively complete, and (b) the desire to maintain the position of the confronter rather than the confrontee. An analysis of the data revealed that differences in goal configurations guided both the decision to rehearse and the process of this rehearsal.     

Weeping: Evidence for a cognitive theory

According to a two-factor cognitive theory of weeping, schema-incongruent information and efforts to assimilate it create arousal; resolution, giving up of the schema, and cessation of the assimilation efforts result in arousal reduction and may be associated with emotional tears. To assess these predictions, female subjects were shown an emotional film under one of two conditions. In one condition only schema-induction and incongruity phases were viewed, while the other condition viewed the complete film (i.e., schema-induction, incongruity, and resolution). Consistent with expectations, incongruity was associated with increased stress and depressed mood. Only subjects who viewed the complete film reported significant decreases in these states. The final scene, assumed to trigger schema change, produced the greatest amount of weeping.This paper is adapted from a portion of a doctoral dissertation conducted by the first author. We gratefully acknowledge the assistance of Walter Katkovsky and Raymond Ditrichs. A version of this paper was presented at a meeting of the Western Psychological Association, May 1986.     

Different slopes for different folks: Process analysis of spatial aptitude

Adults differing in spatial ability were tested on problems involving the mental rotation of familiar alphanumeric stimuli and unfamiliar stimuli drawn from the Primary Mental Abilities Space Test. Individual differences in spatial ability were associated with speed rather than accuracy of mental rotation processes. Ability differences were correlated with the time to rotate familiar alphanumerics and the additional time to encode, compare, and rotate unfamiliar stimuli. The results are discussed in terms of differences in elementary information processes associated with the representation and transformation of visual information.     

A note on the nonmetric analysis of psychological intervals for an unknown ordering of stimuli

A modified version of a coordinate adjustment technique which permits the analysis of comparisons of psychological intervals for an unknown ordering of stimuli is described and compared to the original version and to TORSCA. For configurations with a large number of points, knowledge of the rank order of the stimuli does not improve the solution. For configurations with a small number of points, the performance of the new algorithm with an unknown ordering is equivalent to TORSCA.This research was supported by a grant from the Natural Sciences and Engineering Research Council of Canada.