Capitalizing on the Benefits of Utilizing Part-Time Employees Through Job Autonomy

There are over 20 million part-time employees in the United States, however research on part-time employees is quite limited. Research has revealed inconsistencies when comparing part-time and full-time employees on various job outcomes (e.g., performance, commitment). As a test of Feldman's (1990) causal model of part-time work, this study provides evidence that autonomy mediates the relationship between job status (part-time vs. full-time) and such outcomes, which can help explain some of the inconsistencies in previous research. Managerial implications are discussed.     

Stimulus fading in the treatment of adipsia

Stimulus fading procedures have repeatedly been demonstrated as effective in shaping a wide variety of new behaviors. Borrowing from this body of research, the behavioral treatment of feeding disorders presents a new area of application for stimulus fading. The purpose of this study is to demonstrate the efficacy of stimulus fading in the treatment of adipsia. Two children who ate solids, but refused all liquids, were participants in the study. Results showed that a five step fading procedure starting with a spoon and thickened liquids, and ending with a cut‐out‐cup, was successful in establishing cup drinking skills for both children. Results of the study suggest that stimulus fading can facilitate feeding skill acquisition. Copyright © 2001 John Wiley & Sons, Ltd.     

Relations Among Personality Traits, Mood States, and Driving Behaviors

One hundred sixty-three individuals participated in this study, which assessed relations among personality traits, mood states, and driving behaviors. Each participant underwent a standard driving evaluation on the road and completed the NEO PI-R Personality Inventory and the Profile of Mood States (POMS). Results indicated that the mood states of depression-dejection, anger-hostility, fatigue-inertia, vigor activity, and tension-anxiety were related to Cautiousness while driving for young adults, while personality traits were not found to be related to driving. Implications of these findings are discussed.     

Equity and Status in Group Collaboration: Learning Through Explanations Depends on Task Characteristics

Although many instructors use collaborative group work as one tool in their repertoire, much research remains to be done on how learning occurs within collaborative learning environments. The present study contributes to this goal by finding that giving explanations during collaborative group work contributes to learning on single-answer group tasks, while task-related participation contributes to learning on variable-answer group tasks. Furthermore, the present study found that European–American students showed higher achievement than African–American students after working on a single-answer group task. Importantly, this race-based difference in achievement was tied to a race-based difference in giving explanations. These results reveal modest, but important support for the hypothesis that variable-answer group tasks provide a more equitable environment for participation than single-answer group tasks.     

Sensitivity to disgust, stigma, and adjustment to life with a colostomy

We examined whether trait disgust sensitivity predicts well-being in colostomy patients, and whether disgust predicts stigmatizing attitudes about colostomy in non-patients. 195 patients with a colostomy returned a mailed survey including measures of disgust sensitivity, life satisfaction, mood, and feelings of being stigmatized. We also conducted an internet-survey of a non-patient sample (n = 523). In the patient sample, we observed negative correlations between a bowel-specific measure of disgust sensitivity and life satisfaction (r = -.34, p<.01), and colostomy adjustment ( r = -.42, p<.01), and a positive correlation with feeling stigmatized because of the colostomy (r = .54, p<.01). Correlations between a general trait disgust measure and these outcomes were more modest. A structural equation model indicated that colostomy patients who had high disgust sensitivity felt more stigmatized, and this was in turn strongly related to lower life satisfaction. Concordantly, in the non-patient sample we observed that disgust sensitivity was a significant, positive predictor of wanting less contact with colostomy patients (r = .22, p < .01).     

Erroneous knowledge of results affects decision and memory processes on timing tasks

On mental timing tasks, erroneous knowledge of results (KR) leads to incorrect performance accompanied by the subjective judgment of accurate performance. Using the start-stop technique (an analogue of the peak interval procedure) with both reproduction and production timing tasks, the authors analyze what processes erroneous KR alters. KR provides guidance (performance error information) that lowers decision thresholds. Erroneous KR also provides targeting information that alters response durations proportionately to the magnitude of the feedback error. On the production task, this shift results from changes in the reference memory, whereas on the reproduction task this shift results from changes in the decision threshold for responding. The idea that erroneous KR can alter different cognitive processes on related tasks is supported by the authors' demonstration that the learned strategies can transfer from the reproduction task to the production task but not visa versa. Thus effects of KR are both task and context dependent.     

Personality and Paranormal Belief: A Study Among Adolescents

A sample of 279 13- to 16-year-old adolescents completed the Short-form Revised Junior Eysenck Personality Questionnaire (JEPQR-S) and a six-item Index of Paranormal Belief. The data demonstrate that neuroticism is fundamental to individual differences in paranormal belief, while paranormal belief is independent of extraversion and psychoticism.     

Conjunction benefits and costs reveal decision priming for first-order and second-order features

Across two experiments, decision priming was examined for conjunctions composed of first-order or first- and second-order stimulus features. Observers indicated the presence or absence of one or two features in a Gabor stimulus. When a pair of stimulus features differed in their speed of discrimination, responses indicating the presence of a conjunction were faster than those for the single feature for which discrimination was slowest (conjunction benefits). Also, responses indicating the absence of a conjunction were delayed if one of the features was present (conjunction costs). These results show that first- and second-order features can prime decisions about the presence of a conjunction and suggest that the two kinds of signals can be combined at a decision stage after the discrimination of stimulus properties has begun for each system.