Perfectionism and performance in a new basketball training task: Does striving for perfection enhance or undermine performance?

ObjectivesIn the psychology of sport and exercise, the question of how perfectionism affects performance is highly debated. While some researchers have identified perfectionism as a hallmark quality of elite athletes, others see perfectionism as a maladaptive characteristic that undermines, rather than helps, athletic performance. Against this background, the purpose of the present study was to investigate how different aspects of perfectionism predict performance and performance increments.MethodA study was conducted with 122 undergraduate athletes to investigate how perfectionism during training affects performance and performance increments in a series of trials with a new basketball training task. Two aspects of perfectionism were examined: striving for perfection and negative reactions to imperfection.DesignThe design was a correlational prospective design.ResultsResults showed that striving for perfection during training predicted higher performance in the new task. In contrast, negative reactions to imperfection predicted lower performance when athletes attempted the task for the first time, once the positive influence of striving for perfection on task performance was partialled out. However, negative reactions to imperfection did not undermine performance in the consecutive trials. On the contrary, athletes with both high levels of striving for perfection and high levels of negative reactions to imperfection showed the greatest performance increments over the series of trials.ConclusionThe findings suggest that perfectionism is not necessarily a maladaptive characteristic that generally undermines sport performance. Instead, when learning a new training task, perfectionism may enhance performance and lead to performance increments over repeated trials.     

Diffusion model analysis with MATLAB: A DMAT primer

The Ratcliff diffusion model has proved to be a useful tool in reaction time analysis. However, its use has been limited by the practical difficulty of estimating the parameters. We present a software tool, the Diffusion Model Analysis Toolbox (DMAT), intended to make the Ratcliff diffusion model for reaction time and accuracy data more accessible to experimental psychologists. The tool takes the form of a MATLAB toolbox and can be freely downloaded from ppw.kuleuven.be/okp/dmatoolbox. Using the program does not require a background in mathematics, nor any advanced programming experience (but familiarity with MATLAB is useful). We demonstrate the basic use of DMAT with two examples.     

Blushing during social interactions in people with a fear of blushing

Changes in facial blood flow were investigated during an introductory conversation, delivering a speech, and listening to the speech afterwards in 16 people with a fear of blushing and 16 controls. It was hypothesized that fear of blushing would be associated with high ratings of self-reported blushing intensity and embarrassment during the tasks, and with persistence of the blushing reaction between tasks. Embarrassment and self-reported blushing intensity were greater in the fear-of-blushing group than in controls throughout the experiment. Increases in facial blood flow were similar in the two groups during each of the tasks. However, blushing dissipated more slowly after each task in the fear-of-blushing group than in controls, resulting in an incremental increase in facial blood flow over the course of the experiment. The slow recovery after an episode of blushing might result in physiological or social cues that help to maintain a fear of blushing.     

Exploiting redundancy for flexible behavior: unsupervised learning in a modular sensorimotor control architecture

Autonomously developing organisms face several challenges when learning reaching movements. First, motor control is learned unsupervised or self-supervised. Second, knowledge of sensorimotor contingencies is acquired in contexts in which action consequences unfold in time. Third, motor redundancies must be resolved. To solve all 3 of these problems, the authors propose a sensorimotor, unsupervised, redundancy-resolving control architecture (SURE_REACH), based on the ideomotor principle. Given a 3-degrees-of-freedom arm in a 2-dimensional environment, SURE_REACH encodes 2 spatial arm representations with neural population codes: a hand end-point coordinate space and an angular arm posture space. A posture memory solves the inverse kinematics problem by associating hand end-point neurons with neurons in posture space. An inverse sensorimotor model associates posture neurons with each other action-dependently. Together, population encoding, redundant posture memory, and the inverse sensorimotor model enable SURE_REACH to learn and represent sensorimotor grounded distance measures and to use dynamic programming to reach goals efficiently. The architecture not only solves the redundancy problem but also increases goal reaching flexibility, accounting for additional task constraints or realizing obstacle avoidance. While the spatial population codes resemble neurophysiological structures, the simulations confirm the flexibility and plausibility of the model by mimicking previously published data in arm-reaching tasks.     

RULES AND REASON

Wittgenstein's rule‐following considerations (PI §§185–242) have often been discussed in terms of the debate occasioned by Kripke's interpretation of the so‐called ‘paradox’ of rule‐following. In the present paper, some of the remarks that stood in the centre of that debate are looked at from a very different perspective. First, it is suggested that these remarks are, among other things, meant to bring out that, to the extent we can speak of ‘reason’ in the context of rule‐following, it is a very restricted form of reason – one which is basically to be understood as a kind of conformity. Second, by telling part of the story of the genesis of the relevant remarks it is pointed out that there is a certain tension between the ‘liberating’ character of earlier remarks bearing on rule‐following (PI §§81ff.) and the ‘sinister’ side of later remarks like §§198–202, which helps explain why it took Wittgenstein such a long time to arrive at the views expressed in his rule‐following considerations.     

Why promises and threats need each other

Despite the pervasive use of promises and threats in social life, very little research has been devoted to examining the effectiveness of these interpersonal tactics in promoting cooperation in social dilemmas. Based on the Goal‐Prescribes‐Rationality principle, we hypothesized that cooperation should be most strongly enhanced when promises and threats are communicated in combination, rather than in isolation. Also, we hypothesized that the combination of promises and threats should be especially effective among individuals with prosocial rather than proself orientations. Two studies provided good evidence for the latter hypothesis, in that the combination of promises and threats was only effective in people with prosocial orientations, people who are concerned with equality and collective interest. Copyright © 2006 John Wiley & Sons, Ltd.     

When prosocials act like proselfs in a commons dilemma

Past research has shown that people with prosocial orientations exercise restraint when collectively shared resources are close to being depleted, whereas people with proself orientations tend to maintain high levels of consumption. This research seeks to extend this important finding by examining whether the presence of noise in social-ecological interaction may modify the effects of social values in a commons dilemma. Participants were taking resources from a gradually declining pool. For half of the participants, the intended consumption was subject to incidental increases in consumption (negative noise). Consistent with hypotheses, noise exerted detrimental effects on cooperation when resources became scarce, yet these effects were only observed for prosocials, not for proselfs. These results indicate that noise in social-ecological interaction plays an important role in common-pool management. It tends to undermine cooperation among those who are otherwise inclined to save resources.     

Concurrent verbal and emotion laterality effects exhibited by normally achieving and learning disabled children.

This study assessed both left- and right-hemisphere functions simultaneously when two-syllable words differing only in the initial stop consonant and spoken in different emotional tones were paired dichotically. Seventy-two right-handed normally achieving children, 12 boys and 12 girls at each of grades 1, 3, and 5, were instructed to detect either the presence of a specific word or of a specific emotion. In addition, 30 right-handed learning disabled (LD) children (age-matched to the normal controls) were assessed to determine whether LD children distribute verbal and nonverbal functions to different hemispheres. Results indicated that although both control and LD children demonstrated an overall REA for word stimuli and an LEA for emotional stimuli, and that emotional stimuli were easier to process than word stimuli, LD children were less accurate in processing both types of stimuli than their control counterparts. 'Complementary specialization,' as assessed through distribution of laterality effects, was found to be greater for control children than for LD children. However, the lack of consistency in complementary specialization found among the three developmental grade levels may be indicative that independent brain mechanisms underlying verbal and emotional processing have yet to be fully established in children. Further, in contrast to adult findings, a larger LEA was obtained for the emotion 'happy' than for the emotion 'sad.' It was concluded that whereas independent hemisphere processing for words and emotions is somewhat prevalent for control children, LD children might not be as strongly lateralized for opposite hemisphere processing of these functions.     

Structural Solutions to Social Dilemmas: A Field Study on Commuters’ Willingness to Fund Improvements in Public Transit1

The present field study examined commuters’(N= 152) willingness to fund improvements in public transit. Consistent with Samuelson's (1993; Samuelson & Messick, 1995) multiattribute evaluation model of structural change in social dilemmas, support for the transit plan was higher when it was perceived to be (a) effective at reducing congestion and pollution, (b) personally beneficial, and (c) fair in terms of taxes and benefits. Also consistent with predictions, these relationships were moderated by individual differences in social value orientation (MClintock, 1968) and the consideration of future consequences (CFC; Strathman, Gleicher, Boninger, & Edwards, 1994). Prosocials responded more to the perceived fairness of the plan, while proselfs responded more to the plan's effectiveness in reducing congestion. Low CFCs responded more to the plan's personal benefits and effectiveness in reducing congestion, while high CFCs responded more to the plan's effectiveness in reducing pollution.     

PERCEPTIONS OF BEHAVIORAL CONSISTENCY:

Abstract— Actors view behavior relevant for personality traits as more variable than observers do. This study was designed in replicate this actor-observer effect (AOE) in a common-target paradigm, test whether actors, observers, or both are intuitively aware of the AOE, and examine the effects of social projection on people's awareness of the AOE. Within each actor-observer pair, subjects described the actor on a series of trait adjectives and rated the consistency of relevant behavior. They then predicted the other person's ratings. The AOE emerged, and actors, but not observers, were aware of the effect On average, actors correctly predicted that observers rated actors' behavior as more consistent than actors themselves did Correlational analyses showed that actors and observers were equally prone to project their own ratings lo their matched partners