The Shape Bias is Affected by Differing Similarity Among Objects

Previous research has demonstrated that visual properties of objects can affect shape-based categorization in a novel-name extension task; however, we still do not know how a relationship between visual properties of objects affects judgments in a novel-name extension task. We examined effects of increased visual similarity among the target and test objects in a shape bias task in young children and adults. Experiment 1 assessed college students with sets of objects whose similarity between target and test objects was either low or high similarity. Adults preferred shape when the similarity among objects was minimized. Experiment 2 tested 24-month olds in their use of the shape bias using the Intermodal Preferential Looking Paradigm. Children showed a shape bias only with items whose similarity to each other was low. These findings suggest that the visual properties of objects affect shape bias performance.     

Take the first heuristic, self-efficacy, and decision-making in sport

Can taking the first (TTF) option in decision-making lead to the best decisions in sports contexts? And, is one's decision-making self-efficacy in that context linked to TTF decisions? The purpose of this study was to examine the role of the TTF heuristic and self-efficacy in decision-making on a simulated sports task. Undergraduate and graduate students (N = 72) participated in the study and performed 13 trials in each of two video-based basketball decision tasks. One task required participants to verbally generate options before making a final decision on what to do next, while the other task simply asked participants to make a decision regarding the next move as quickly as possible. Decision-making self-efficacy was assessed using a 10-item questionnaire comprising various aspects of decision-making in basketball. Participants also rated their confidence in the final decision. Results supported many of the tenets of the TTF heuristic, such that people used the heuristic on a majority of the trials (70%), earlier generated options were better than later ones, first options were meaningfully generated, and final options were meaningfully selected. Results did not support differences in dynamic inconsistency or decision confidence based on the number of options. Findings also supported the link between self-efficacy and the TTF heuristic. Participants with higher self-efficacy beliefs used TTF more frequently and generated fewer options than those with low self-efficacy. Thus, not only is TTF an important heuristic when making decisions in dynamic, time-pressure situations, but self-efficacy plays an influential role in TTF.     

Vibrotactile discrimination of musical timbre

Five experiments investigated the ability to discriminate between musical timbres based on vibrotactile stimulation alone. Participants made same/different judgments on pairs of complex waveforms presented sequentially to the back through voice coils embedded in a conforming chair. Discrimination between cello, piano, and trombone tones matched for F0, duration, and magnitude was above chance with white noise masking the sound output of the voice coils (Experiment 1), with additional masking to control for bone-conducted sound (Experiment 2), and among a group of deaf individuals (Experiment 4a). Hearing (Experiment 3) and deaf individuals (Experiment 4b) also successfully discriminated between dull and bright timbres varying only with regard to spectral centroid. We propose that, as with auditory discrimination of musical timbre, vibrotactile discrimination may involve the cortical integration of filtered output from frequency-tuned mechanoreceptors functioning as critical bands. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Perceptions of virtual reality among therapists who do not apply this technology in clinical practice

Research has documented the usefulness of virtual reality (VR) in treating a number of psychopathologies. Despite its recognized clinical utility, VR remains underutilized in clinical practice. For the purpose of this study, 262 therapists who reported that they did not currently use VR in psychotherapy were surveyed about their perceptions of the use of this technology in clinical practice. Results suggest that reluctance in using this technology stems from beliefs about the required training, equipment, and financial costs and from unfamiliarity with the various benefits and applications of VR. The significance of promoting greater use of this new technology is discussed. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

The prevalence and correlations of medical student burnout in the pre-clinical years: a cross-sectional study

Burnout is a psychological syndrome of emotional exhaustion, depersonalization, and impaired personal accomplishment induced by repeated workplace stressors. Current research suggests that physician burnout may have its origins in medical school. The consequences of medical student burnout include both personal and professional distress, loss of empathy, and poor health. We hypothesized that burnout occurs prior to the initiation of the clinical years of medical education. This was a cross-sectional survey administered to third-year medical students at the Mount Sinai School of Medicine (MSSM) in New York, New York (a traditional-style medical school with a marked division between pre-clinical and clinical training occurring at the beginning of the third year). Survey included an instrument used to measure job burnout, a sleep deprivation screen, and questions related to demographic information, current rotation, psychiatric history, time spent working/studying, participation in extracurricular activities, social support network, autonomy and isolation. Of the 86 medical students who participated, 71% met criteria for burnout. Burnt out students were significantly more likely to suffer from sleep deprivation (p?=?0.0359). They were also more likely to disagree with the following statements: "I have control over my daily schedule" (p?=?0.0286) and "I am confident that I will have the knowledge and skills necessary to become an intern when I graduate" (p?=?0.0263). Our findings show that burnout is present at the beginning of the third year of medical school, prior to the initiation of the clinical years of medical training. Medical student burnout is quite common, and early efforts should be made to empower medical students to both build the knowledge and skills necessary to become capable physicians, as well as withstand the emotional, mental, and physical challenges inherent to medical school.     

Job Autonomy as a Predictor of Mental Well-Being: The Moderating Role of Quality-Competitive Environment

Purpose

This study examines the moderating role of quality-competitive environment on the relationships between job autonomy and employees?? mental well-being and organizational commitment. It also investigates the mediating role of organizational commitment on the relationship between job autonomy and mental well-being.

Design/Methodology/Approach

The proposed hypotheses were tested by hierarchical linear modeling using an archival dataset from the Workplace Employment Relations Survey, which was conducted in Great Britain in 2004 and 2005 (12,836 employees and 1,190 managers).

Findings

This study found that quality-competitive environment moderated the relationships between job autonomy and mental well-being and between job autonomy and organizational commitment. That is, job autonomy was more strongly related to mental well-being and organizational commitment in more quality-competitive organizations. The results also indicated that this moderation was partially mediated by organizational commitment.

Implications

Because job autonomy is related to employees?? mental well-being and organizational commitment, organizations need to provide their employees with job autonomy. More importantly, because these positive relationships are stronger in quality-competitive companies, organizations in a highly quality-competitive market in particular should provide their employees with more job autonomy.

Originality/Value

This is one of the first studies that investigated the vertical fit between job autonomy and organizational contexts while focusing on individual employees?? outcomes (attitudes and mental well-being). The results were obtained by data from a nationally representative sample, allowing us to generalize the results. Additionally, since the dataset was collected from multiple sources, self-report and common-method biases are minimized.     

A Confirmatory Factor Analysis of the Short Form Sex Role Behavior Scale

The Sex Role Behavior Scale (SRBS; Orlofsky & O'Heron, 1987; Orlofsky, Ramsden, & Cohen, 1982) is the only measure of the extent to which people engage in male- and female-valued behaviors, as well as sex-specific behaviors. Because of this, researchers must be assured of its reliability and validity. Although the SRBS has demonstrated good reliability, validity tests have been limited to examinations of scale intercorrelations, correlations with other gender role measures, and tests of gender differences. Tests of the SRBS's construct validity have not been performed. Thus, a scale-based confirmatory factor analysis of the short form SRBS was undertaken to determine the validity of its proposed 12-factor, lower-order and 3-factor, higher-order factor structures. In this sample of undergraduates, both lower-order and higher-order models failed to provide a good fit to the data, which suggests that a new version of the SRBS may be required. Discussion focussed on possible directions for a revision, potential limitations, as well as the need for more measures like the SRBS.     

Schizophrenia risk and paternal age: a potential role for de novo mutations in schizophrenia vulnerability genes

How schizophrenia (SZ) is maintained at roughly 1% of the population despite diminished reproduction is one puzzle currently facing researchers. De novo mutations were first proposed over half a century ago as a source for new SZ genes. Current evidence linking advancing paternal age to SZ risk makes revisiting this hypothesis important. Advancing paternal age is the major source of new mutations in the human population. This article will examine potential mechanisms whereby parental age may impact new mutations, as well as review recent data supporting such a hypothesis.     

Elicited imitation in lexical development: Evidence from a study of temporal reference

This study examined the use of elicited imitation in investigating lexical development within a semantic domain. For this purpose the acquisition of reference to sequence and simultaneity by 3–5 year old children was examined. Three factors were proposed to account for the order in which lexical items within a semantic field are acquired: restrictedness of a lexical item, congruence with perceptual strategies, and conceptual simplicity. A significantly greater number of correct responses was found in sentences describing sequential events than in simultaneous events. Furthermore, imitations of sentences referring to simultaneity were more degraded than imitations of sentences referring to sequence. The children seemed to begin acquiring reference to temporally related events by learning about words describing serially ordered events. A three stage developmental model is proposed to account for the results.Some of the data reported here are drawn from the author's doctoral dissertation from the Department of Linguistics, State University of New York, Buffalo, 1974.