Focused attention in three-dimensional space

The size of focused attention was assessed within a three-dimensional display. Subjects viewed random-dot stereogram displays in which they responded differentially to vertical and horizontal bars. Adjacent noise elements either were identical to the response target or specified the opposite response. The position of the noise elements was varied in depth according to binocular disparity. Interference by incompatible noise elements decreased with depth separation between the noise elements and response target. In addition, interference was greater for noise elements that were more distant from the observer than from the response target than it was for noise elements that were closer to the observer than to the response target. The implications of these results for a viewer-centered representation of focused attention in depth are discussed.     

Paired comparisons with individual differences

A model of Bradley-Terry type for paired comparisons is considered. In addition to the usual parameters, the model allows for individual parameters and corresponding parameters for the choice-alternatives. The model is applied to a set of data from a Danish investigation of the attitude of blue collar workers towards alternative social gains. The proposed model is finally compared to a model recently suggested by Schönemann and Wang.     

Individuum,Gesellschaft Und Staat

Ohne Zusammenfassung     

LOGIQUE ET PSYCHOLOGIE DE L'APPRENTISSAGE DES CONCEPTS

In the field of concept learning, there are very few studies in which logícal conditions are used as independent variables. A logical analysis of concept learning phenomena is presented: it is an application of some elementary theoremas of logics and set theory. To learn a concept means to identify relevant attributes of the phenomena observed; the theoretical analysis of the situation shows that concept learning can be seen as a problem, the solution of which depends on a precise algorithm. Numerous experiments have been carried out on the basis of such an analysis, some of which are described here. Results provide evidence that time and quality of performance depend on the length and logical structure of the set of successive stimuli presented to subjccts. So logical features of the situation influence concept learning; but, there are various other factors which control subject's performance : for instance, number of redundant examples, and subject's memory and perceptual-motor activity. Current interpretations of concept learning, i.e., stochastic models of learning and logical and mathematical interpretation are discussed and the need of an approach which would combine both to fit the complexity of concept learning phenomena is emphasized.     

The impact of past relationships on interpersonal behavior: behavioral confirmation in the social-cognitive process of transference

This study extended research on transference in social perception (e.g., S. M. Andersen, I. Reznik, & L. M. Manzella, 1996) into the realm of social behavior by examining behavioral confirmation (e.g., M. Snyder, 1992) in transference. Each perceiver participated in a brief conversation with a naive target participant, who either did or did not appear to resemble the perceiver's own positively or negatively regarded significant other. Trained judges rated positive affect expressed in targets' behavior. As predicted, targets expressed more positive affect in their behavior when they allegedly resembled the perceiver's own positively versus negatively toned significant other, an effect not found in the control condition. This evidence demonstrates behavioral confirmation in transference, suggesting a means by which present relationships may resemble past ones.     

The diagnostic efficiency of the Rorschach Depression Index and the Schizophrenia Index: a review

This review focuses on the diagnostic efficiency of the new versions of the Rorschach Comprehensive System Depression Index (DEPI) and the Schizophrenia Index (SCZI). Clinical diagnosis according to the Diagnostic and Statistical Manual of Mental Disorders was chosen as the external validation criteria. The sensitivity, specificity, and overall classification rates for the indices were presented from the studies or computed from the data when possible. The positive and negative predictive validity was estimated at three different base rates. As regards the DEPI the results showed a large variation in diagnostic performance as the index seemed to have relatively more success in identifying nonpsychotic and unipolar depression than psychotic and bipolar depression. The DEPI did not successfully identify depression among adolescent patients. As regards the SCZI the results more consistently indicated that the index effectively discriminates between psychotic and nonpsychotic patients and the predictive validity of both a positive and negative SCZI was found to be high.     

Hearing by eye: how much spatial degradation can be tolerated?

In the McGurk effect (McGurk and MacDonald, 1976 Nature 264 746-748), illusory auditory perception is produced if the visual information from lip movements is discrepant from the auditory information from the voice. A study is reported of the tolerance of the effect to varying levels of spatial degradation (videotaped images of a speaker's face were quantised by a mosaic transform). The illusory effect systematically decreased with an increase in the coarseness of the spatial quantisation. However, even with the coarsest level (11.2 pixels/face) the illusion did not completely disappear. In addition, those participants who did not experience the illusion nevertheless showed the effects of auditory-visual interaction in their clarity ratings of the auditory stimulus. It is concluded that auditory-visual interaction in visible speech perception is based on relatively coarse-spatial-scale information.     

Development and psychometric validation of the verbal affective memory test

We here present the development and validation of the Verbal Affective Memory Test-24 (VAMT-24). First, we ensured face validity by selecting 24 words reliably perceived as positive, negative or neutral, respectively, according to healthy Danish adults’ valence ratings of 210 common and non-taboo words. Second, we studied the test's psychometric properties in healthy adults. Finally, we investigated whether individuals diagnosed with Seasonal Affective Disorder (SAD) differed from healthy controls on seasonal changes in affective recall. Recall rates were internally consistent and reliable and converged satisfactorily with established non-affective verbal tests. Immediate recall (IMR) for positive words exceeded IMR for negative words in the healthy sample. Relatedly, individuals with SAD showed a significantly larger decrease in positive recall from summer to winter than healthy controls. Furthermore, larger seasonal decreases in positive recall significantly predicted larger increases in depressive symptoms. Retest reliability was satisfactory, rs?≥?.77. In conclusion, VAMT-24 is more thoroughly developed and validated than existing verbal affective memory tests and showed satisfactory psychometric properties. VAMT-24 seems especially sensitive to measuring positive verbal recall bias, perhaps due to the application of common, non-taboo words. Based on the psychometric and clinical results, we recommend VAMT-24 for international translations and studies of affective memory.     

Volunteerism in a Community‐Based Sample of Women Aged 50 to 80 Years1

This paper has 2 purposes: (a) to present the differences in demographic and health characteristics of older women volunteers and nonvolunteers in a community‐based sample; (b) to identify the motivations of current and past volunteers, as contrasted with those who have never volunteered. A population‐based survey was conducted with a sample of 1,104 women aged 50 to 80 years in the state of Washington. Nonvolunteers were less likely to be married and were slightly less likely to be White than were current or past volunteers. Demographic variables (e. g., age) and health status predicted level of reported motivation for volunteering. These data provide us with population‐based estimates of volunteering and motivations for older women.