Time intervals production in tapping and oscillatory motion

We applied spectral analysis on series of time intervals produced in a synchronization-continuation experiment. In the first condition intervals were produced by finger tapping, and in the second by an oscillatory motion of the hand. Results obtained in tapping were consistent with a discrete, event-based timing model. In the oscillatory condition, the spectra suggested a continuous, dynamic timing mechanism, based on the regulation of effector stiffness. It is concluded that the oscillatory character of movement can offer an important resource for timing control. The use of an event-based timing control such as postulated in the Wing-Kristoffersson model could be restricted to a quite limited class of rhythmic tasks, characterized by the concatenation of discrete events.     

Assessing normative approaches to communicating violence risk: a national survey of psychologists

There is growing attention to the importance of violence risk communication, and emerging empirical evidence of how evaluating clinicians who conduct risk assessments communicate their conclusions about the risk of violence toward others. The present study addressed the perceived value of different forms of risk communication through a national survey of practicing psychologists (N = 1,000). Responses were received from a total of 256 participants, who responded to eight vignettes in which three factors relevant to risk communication were systematically varied in a 2 x 2 x 2 within-subjects design, counterbalanced for order: (i) risk model (prediction oriented versus management oriented), (ii) risk level (high risk versus low risk), and (iii) risk factors (static versus dynamic). Participants were asked to rate the value of six styles of risk communication for each of eight vignettes. The most highly valued style of risk communication involved identifying risk factors applicable to the individual, and specifying interventions to reduce risk. These results were consistent with findings from several previous studies in this area, and reflect an emerging trend in preferences for style and context of risk communication of violence.     

Spatial and object working memory impairments in schizophrenia patients: a Bayesian item-response theory analysis

This study reports evidence that schizophrenia patients are significantly impaired in both spatial and object (shape) working memory. A 3-s delay between exposure and recall of targets was used and Bayesian item-response theory was applied to compensate for the tasks' differential difficulty while simultaneously taking account of missing data from participant attrition. Weaker evidence was found that in schizophrenia both domains are equally impaired on average, that spatial and object working memory appear to be more highly correlated with each other in the schizophrenia population than in the normal population, and that schizophrenia patients show greater variability in spatial than object working memory performance.     

Do gender–science stereotypes predict science identification and science career aspirations among undergraduate science majors?

The present research examined whether gender–science stereotypes were associated with science identification and, in turn, science career aspirations among women and men undergraduate science majors. More than 1,700 students enrolled in introductory science courses completed measures of gender–science stereotypes (implicit associations and endorsement of male superiority in science), science identification, and science career aspirations. Results were consistent with theoretically based predictions. Among women, stronger gender–science stereotypes were associated with weaker science identification and, in turn, weaker science career aspirations. By contrast, among men stronger gender–science stereotypes were associated with stronger science identification and, in turn, stronger science career aspirations, particularly among men who were highly gender identified. These two sets of modest but significant findings can accumulate over large populations and across critical time points within a leaky pipeline to meaningfully contribute to gender disparities in STEM domains.     

The Land Ethic and Callicott's Ethical System (1980-2001): An Overview and Critique

Anti‐naturalistic critics of Unity of Science have often tried to establish a fundamental difference between social and physical science on the grounds that research in the social field (unlike physical research) seems to interfere with the original situations so as to make accurate predictions impossible. A ‘social’ prediction may, e.g., itself influence the course of events so that the prediction proves false. H. A. Simon has dealt with such effects of predictions in a well‐known article. Drawing on a mathematical theorem, Brouwer's so‐called fixed‐point theorem, he claims to prove that reactions to published predictions can be accounted for so that appropriately adjusted predictions can avoid being self‐destructive. The present article is an attempt to show that Simon's use of the Brouwer theorem is misplaced, and that his proof does not parry the anti‐naturalistic argument. Indeed, the burden of his proof is not really of a mathematical, but, it is argued, of a ‘protosociological’ kind. In conclusion, the article points to the fundamental inadequacy of a frame of reference which makes the ‘interference’ or ‘reaction’ effects due to people's having access to social knowledge appear strange or eccentric: as some kind of marginal irregularity causing trouble in the philosophy of (social) science.     

Development of a Brief Form of the Interpersonal Reactivity Index (B–IRI)

The Interpersonal Reactivity Index (IRI) is a standardized self-report measure of disposition to empathic responsiveness for the general adult population (the domain for which it was developed), and for the general adolescent population. The IRI has a number of problems, however, including some uncertainty about its factor structure, low reliabilities, and poor readability of some items for people with limited literacy skills. To address these issues, we constructed an abbreviated form of the index, the Brief IRI (B–IRI). Three studies demonstrated that this 16-item B–IRI has a clear and coherent factor structure, adequate internal consistency, measurement invariance across gender and age, and theoretically meaningful associations with a range of external criteria that support its construct validity. The B–IRI substantially preserves the psychometric properties of the long form, and we recommend its use in all research settings.