Do conversational hand gestures communicate?

In 5 experiments, male and female undergraduates viewed gestures and tried to select the words that originally accompanied them; read interpretations of gestures' meanings and tried to select the words that originally had accompanied them; tried to recognize gestures they previously had seen, presented either with or without the accompanying speech; and assigned gestures and the accompanying speech to semantic categories. On all 4 tasks, performance was better than chance but markedly inferior to performance when words were used as stimuli. Judgments of a gesture's semantic category were determined principally by the accompanying speech rather than gestural form. It is concluded that although gestures can convey some information, they are not richly informative, and the information they convey is largely redundant with speech.     

Accuracy and bias in estimates of others' knowledge

Perspective-taking is central to much social interaction, but the processes by which it is accomplished are poorly understood. The current study examines accuracy and bias in one type of perspective-taking: inferences about what others know. Twenty-two New York City landmarks were presented in three conditions: Picture Only, Picture-+ Name and Name Only. Subjects estimated the proportion of short- and long-term New York City residents who could identify each landmark from its picture. They also rated their subjective recognition of the stimuli. Subjects in all three conditions were good at estimating stimulus identifiability, but their estimates were biased in the direction of their own knowledge. Estimates of the difference in identifications by short-and long-term residents were relatively inaccurate, probably because the two groups differed less than anticipated. For most but not all subjects, subjective feelings of recognition were significantly correlated with estimates of identifiability. We conclude that perceptions of the distribution of knowledge are socially shared.     

Escalating schedules of incentives increase physical activity with no differences between deposit and no-deposit groups: A systematic replication

Physical inactivity has increasingly affected public health in the United States during the COVID-19 pandemic as it is associated with chronic diseases such as arthritis, cancer, and heart disease. Contingency management has been shown to increase physical activity. Therefore, the present study sought to evaluate the effects of an escalating schedule of monetary reinforcement with a reset contingency on physical activity, as compared between 2 counterbalanced groups in which a monetary deposit of $25 was either required (deposit group) or not (no-deposit group). Twenty-five adults wore Fitbit accelerometers to monitor step counts. An ABA reversal design was used; in the 2 baseline phases, no programmed contingencies were in place for step counts. During intervention, step goals were set using a modified 70^th percentile schedule with a 7-day window: Reaching the first goal would result in $0.25, and incentives increased by $0.25 for each subsequent day in which the goal was met. Failure to reach a goal resulted in a reset of the monetary incentive value to $0.25. Ten out of 12 participants from the deposit group were determined to be responders to intervention, whereas 8 out of 13 participants from the no-deposit group were determined to be responders to intervention. Overall, there were no significant differences between the groups' step counts. However, the deposit group's intervention was cheaper to implement, which suggests that deposit contracts are a viable modification for physical activity interventions.     

Resurgence as Choice in Context: Treatment duration and on/off alternative reinforcement

Resurgence as Choice (RaC) is a quantitative theory suggesting that an increase in an extinguished target behavior with subsequent extinction of an alternative behavior (i.e., resurgence) is governed by the same processes as choice more generally. We present data from an experiment with rats examining a range of treatment durations with alternative reinforcement plus extinction and demonstrate that increases in treatment duration produce small but reliable decreases in resurgence. Although RaC predicted the relation between target responding and treatment duration, the model failed in other respects. First, contrary to predictions, the present experiment also replicated previous findings that exposure to cycling on/off alternative reinforcement reduces resurgence. Second, RaC did a poor job simultaneously accounting for target and alternative behaviors across conditions. We present a revised model incorporating a role for more local signaling effects of reinforcer deliveries or their absence on response allocation. Such signaling effects are suggested to impact response allocation above and beyond the values of the target and alternative behaviors as longer-term repositories of experience. The new model provides an excellent account of the data and can be viewed as an integration of RaC and a quantitative approximation of some aspects of Context Theory.     

Quantification of Conflicts of Interest in an Online Point-of-Care Clinical Support Website

Science and Engineering Ethics - Online medical reference websites are utilized by health care providers to enhance their education and decision making. However, these resources may not adequately...     

The Effects of Tragedies and Contradictions on Religion as a Quest

The present study was designed to investigate the differential influences of exposure to life tragedies and religious contradictions on the tendency to engage in religious questioning (quest orientation). A replication and extension of a study by Burris, Jackson, Tarpley, and Smith (1996) was conducted to determine whether exposure to religious contradictions alone or life tragedies alone would influence quest orientation. Additional experimental conditions attempted to address Batson's (1982) theoretical position that quest orientation results “from a process of cognitive restructuring in response to existential questions” (p. 162). The results replicated Burris et al. (1996) and also showed that exposure to tragedy alone led to increases in quest orientation. The results did not support the idea that exposure to contradictions increased quest orientation. Unexpectedly, some evidence was found that exposure to tragedy influenced extrinsic orientation.     

Business owners' action planning and its relationship to business success in three African countries

A model of business success was developed with motivational resources (locus of control, self-efficacy, achievement motivation, and self-reported personal initiative) and cognitive resources (cognitive ability and human capital) as independent variables, business owners' elaborate and proactive planning as a mediator, and business size and growth as dependent variables. Three studies with a total of 408 African micro and small-scale business owners were conducted in South Africa, Zimbabwe, and Namibia. Structural equation analyses partially supported the hypotheses on the importance of psychological planning by the business owners. Elaborate and proactive planning was substantially related to business size and to an external evaluation of business success and was a (partial) mediator for the relationship between cognitive resources and business success. The model carries important implications for selection, training, and coaching of business owners.     

Understanding the “Why” as Well as the “How”: Service Performance is a Function of Prosocial Motives and Emotional Labor

Which employees tend to better perform with customers? We suggest a combination of individual differences; specifically, we consider both why employees are working (prosocial motivation) and how (emotional labor). Deep acting should enhance the positive relationship between prosocial motivation and performance, while surface acting should dampen this relationship. Using a field sample of 214 grocery clerks and supervisor ratings of interpersonal performance with customers, we did not find the amplifying effect of deep acting. We do find the dampening effect for surface acting, such that surface acting buffers those with low prosocial motives, presumably by allowing them to “act” like they want to help others. This helps to explain the weak relationship of prosocial motives with performance and suggests implications for research and practice.