Plateaus,Dips, and Leaps: Where to Look for Inventions and Discoveries During Skilled Performance

The framework of plateaus, dips, and leaps shines light on periods when individuals may be inventing new methods of skilled performance. We begin with a review of the role performance plateaus have played in (a) experimental psychology, (b) human–computer interaction, and (c) cognitive science. We then reanalyze two classic studies of individual performance to show plateaus and dips which resulted in performance leaps. For a third study, we show how the statistical methods of Changepoint Analysis plus a few simple heuristics may direct our focus to periods of performance change for individuals. For the researcher, dips become the marker of exploration where performance suffers as new methods are invented and tested. Leaps mark the implementation of a successful new method and an incremental jump above the path plotted by smooth and steady log–log performance increments. The methods developed during these dips and leaps are the key to surpassing one's teachers and acquiring extreme expertise.     

Information‐Theoretic Measures Predict the Human Judgment of Rhythm Complexity

To formalize the human judgment of rhythm complexity, we used five measures from information theory and algorithmic complexity to measure the complexity of 48 artificially generated rhythmic sequences. We compared these measurements to human prediction accuracy and easiness judgments obtained from a listening experiment, in which 32 participants guessed the last beat of each sequence. We also investigated the modulating effects of musical expertise and general pattern identification ability. Entropy rate and Kolmogorov complexity were correlated with prediction accuracy, and highly correlated with easiness judgments. A logistic regression showed main effects of musical training, entropy rate, and Kolmogorov complexity, and an interaction between musical training and both entropy rate and Kolmogorov complexity. These results indicate that information‐theoretic concepts capture some salient features of the human judgment of rhythm complexity, and they confirm the influence of musical expertise on complexity judgments.     

Overcoming the myth of the mental

Can we accept John McDowell’s Kantian claim that perception is conceptual “all the way out,” thereby denying the more basic perceptual capacities we seem to share with prelinguistic infants and higher animals? More generally, can philosophers successfully describe the conceptual upper floors of the edifice of knowledge while ignoring the embodied coping going on on the ground floor? I argue that we shouldn’t leave the conceptual component of our lives hanging in midair and suggest how philosophers who want to understand knowledge and action can profit from a phenomenological analysis of the nonconceptual embodied coping skills we share with animals and infants, as well as the nonconceptual immediate intuitive understanding exhibited by experts.     

Evidence that blatant versus subtle stereotype threat cues impact performance through dual processes

An experiment tested three competing hypotheses for how blatant and subtle stereotype threat cues influence the performance of female sports participants on a golf-putting task. A “predominant” model predicts that blatant threat cues have a more negative effect on performance than subtle threat cues, whereas an “additive” model predicts that both cues combine to have a greater negative effect than either threat cue alone. However, a “dual process” model predicts that each threat cue has an independent negative influence through separate mechanisms. To test these predictions, we varied the presence of blatant (e.g., the task frame) and subtle cues (e.g., the gender of the experimenter) for negative stereotypes about female athletes, and then measured both the number of strokes required to finish the course and accuracy on the last putt of each hole. The results supported the dual process model prediction: females required more strokes to finish the golf task when it was framed as measuring gender differences compared to racial differences in athletic ability, and females performed less accurately on the last putt of each hole in the presence of a male versus a female experimenter. The discussion focuses on how the presence of multiple stereotype threat cues can induce independent mechanisms that may have separate but simultaneously deleterious effects on performance.     

An ethics of expertise based on informed consent

Ethicists widely accept the notion that scientists have moral responsibilities to benefit society at large. The dissemination of scientific information to the public and its political representatives is central to many of the ways in which scientists serve society. Unfortunately, the task of providing information can often give rise to moral quandaries when scientific experts participate in politically charged debates over issues that are fraught with uncertainty. This paper develops a theoretical framework for an “ethics of expertise” (EOE) based on the notion that scientists have responsibilities to provide information in a way that promotes autonomous decision-making on the part of the public and its representatives. Moreover, insofar as the principle of informed consent has developed in biomedical ethics as a way for physicians to promote autonomous decision-making on the part of their patients, this paper suggests that the informed-consent concept may suggest a set of criteria and guidelines that can help scientists to fulfill their similar ethical responsibilities to the public. In order to illustrate how the resulting EOE could provide practical guidance for scientific experts, the paper examines a case study involving the dissemination of information about the low-dose biological effects of toxic chemicals and carcinogens.     

Predictors and outcomes of sports coaches’ athlete-invested contingent self-worth

Some sports coaches not only invest considerable time and energy in their athletes, but also attach their self-worth to the successes and failures of their athletes. Grounded in Self-Determination Theory, the present study aimed to examine the theoretical predictors and outcomes of such Athlete-Invested Contingent Self-worth (AICS). Results from a cross-sectional study (Study 1; N = 740, M_age = 34.37 years) and an experimental vignette-based study among youth sports coaches (Study 2; N = 318, M_age = 38.94 years) indicated that AICS was positively related to a controlling coaching style and negatively related to a structuring style. Study 1 showed that a perceived evaluative club board was positively related to AICS, and Study 2 further demonstrated that poor performance was negatively associated with AICS and that an evaluative climate was related to AICS through experiences of need frustration. The discussion focuses on the pitfalls of coaches’ contingent self-worth for the development of their athletes.     

The variability of client,therapist and clinic in psychotherapy outcomes: A three-level hierarchical model

This article investigates the percentage of variance in psychotherapy outcomes explained by the case-mix variables for individual cases, by the therapist (therapist effects), and what additional variance is explained by the clinic with which the therapist is affiliated. While there has been substantial recent research regarding therapist effects, very little has been published regarding clinic-level effects after controlling for therapist effects. The study utilised the largest sample reported to date, using data from 28 clinics with a minimum of 2,000 cases in a clinical range of severity of symptoms with pre-post change scores on an outcome questionnaire. Only cases treated by a therapist with at least 30 cases were included. These selection criteria resulted in a case count of 156,258 clients treated by 874 therapists located at 28 clinics. After controlling for differences in case mix using diagnosis and intake score (severity of symptoms), the resulting analyses indicated that 5.21% of the variance in treatment outcome was explained by the therapist, while another 1.13% of the variance was associated with the clinic. Findings are discussed with implications for practice and policy.     

Socio-cognitive,expertise-based and appearance-based accounts of the other-‘race’ effect in face perception: A label-based systematic review of neuroimaging results

Two competing theories explain the other-‘race’ effect (ORE) either by greater perceptual expertise to same-‘race’ (SR) faces or by social categorization of other-‘race’ (OR) faces at the expense of individuation. To assess expertise and categorization contributions to the ORE, a promising—yet overlooked—approach is comparing activations for different other-‘races’. We present a label-based systematic review of neuroimaging studies reporting increased activity in response to OR faces (African, Caucasian, or Asian) when compared with the SR of participants. Hypothetically, while common activations would reflect general aspects of OR perception, ‘race’-preferential ones would represent effects of ‘race’-specific visual appearance. We find that several studies report activation of occipito-temporal and midcingulate areas in response to faces across different other-‘races’, presumably due to high demand on the visual system and category processing. Another area reported in response to all OR faces, the caudate nucleus, suggests the involvement of socio-affective processes and behavioural regulation. Overall, our results support hybrid models—both expertise and social categorization contribute to the ORE, but they provide little evidence for reduced motivation to process OR faces. Additionally, we identify areas preferentially responding to specific OR faces, reflecting effects of visual appearance.     

Psychometric properties of the youth experience survey with young athletes

Objectives

The topic of positive youth development through sport has received much research attention in recent years. However, a specific tool that measures this construct has yet to be fully developed. The purpose of this study was to test the factor structure of the Youth Experience Survey 2.0 (YES; Hansen & Larson, 2005) in a sample of youth sport participants; an instrument that was originally developed to assess experiences across any type of structured activity.

Design/methods

A total of 637 athletes aged 9-19 years completed the YES. A confirmatory factor analysis was conducted to fit the data to the model. The confirmatory factor analysis did not provide strong support for the models tested that resulted in a re-examination of the data using exploratory analyses. This analysis was preceded by a parallel analysis to determine the number of factors to retain.

Results

Results of exploratory analyses created a modified version of the YES that measures 5 dimensions of youth development (personal and social skills, initiative, goal setting, cognitive skills, and negative experiences). The revised version of the scale, which contains 37 items, was renamed the Youth Experience Survey for Sport (YES-S).

Conclusions

The YES-S is proposed as an instrument capable of measuring positive and negative developmental experiences occurring in the youth sport domain.     

品牌名称暗示性对消费者决策选择的影响：认知需要和专业化水平的调节作用

品牌管理者最首要的决策就是选择一个好记的或有意义的品牌名字。由于任何特征的品牌名字都必须借助消费者的认知差异来实现真正的差异化, 因此, 从消费者认知特点出发研究暗示性品牌名字就显得尤为重要和有意义。本文通过3个实验, 分别验证了消费者认知需要和专业化水平对品牌名称暗示性与决策选择的调节作用。方差分析发现：低专业化水平的消费者更倾向于根据暗示性的品牌名字做出决策, 而高专业化水平的消费者则不受品牌名称暗示程度的影响。此外, 低认知需要的消费者比较喜欢暗示性的品牌名字, 而对于高认知需要的消费者来说, 品牌名字的暗示性程度不会对其决策过程产生影响。最后, 研究结果揭示了专业化水平和认知需要对暗示性品牌名字效果发挥具有交互作用。对于具有高专业化水平的消费者来说, 无论他们处于低认知需要还是高认知需要, 品牌名字的暗示程度都不会影响他们的态度形成。相反地,对于具有低专业化水平的消费者来说, 无论是低认知需要还是高认知需要均倾向于暗示性的品牌名字。而对于专业化程度中等的消费者而言, 暗示性品牌名字效用的发挥则取决于其处理信息的动机—认知需要水平。