Dialed in
The Impact of Circadian Misalignment on Athletic Performance in Professional Football Players
Roger Smith et al.
Sleep, December 2013, Pages 1999-2001
Objective: We hypothesized that professional football teams would perform better than anticipated during games occurring close to their circadian peak in performance.
Design: We reviewed the past 40 years of evening and daytime professional football games between west coast and east coast United States teams. In order to account for known factors influencing football game outcomes we compared the results to the point spread which addresses all significant differences between opposing teams for sports betting purposes. One sample t-tests, Wilcoxon signed ranked tests, and linear regression were performed. Comparison to day game data was included as a control.
Results: The results were strongly in favor of the west coast teams during evening games against east coast teams, with the west coast teams beating the point spread about twice as often (t = 3.95, P < 0.0001) as east coast teams. For similar daytime game match-ups, we observed no such advantage.
Conclusions: Sleep and circadian physiology have profound effects on human function including the performance of elite athletes. Professional football players playing close to the circadian peak in performance demonstrate a significant athletic advantage over those who are playing at other times. Application of this knowledge is likely to enhance human performance.
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Get Excited: Reappraising Pre-Performance Anxiety as Excitement
Alison Wood Brooks
Journal of Experimental Psychology: General, forthcoming
Abstract:
Individuals often feel anxious in anticipation of tasks such as speaking in public or meeting with a boss. I find that an overwhelming majority of people believe trying to calm down is the best way to cope with pre-performance anxiety. However, across several studies involving karaoke singing, public speaking, and math performance, I investigate an alternative strategy: reappraising anxiety as excitement. Compared with those who attempt to calm down, individuals who reappraise their anxious arousal as excitement feel more excited and perform better. Individuals can reappraise anxiety as excitement using minimal strategies such as self-talk (e.g., saying "I am excited" out loud) or simple messages (e.g., "get excited"), which lead them to feel more excited, adopt an opportunity mind-set (as opposed to a threat mind-set), and improve their subsequent performance. These findings suggest the importance of arousal congruency during the emotional reappraisal process.
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Saving in Cycles: How to Get People to Save More Money
Leona Tam & Utpal Dholakia
Psychological Science, forthcoming
Abstract:
Low personal savings rates are an important social issue in the United States. We propose and test one particular method to get people to save more money that is based on the cyclical time orientation. In contrast to conventional, popular methods that encourage individuals to ignore past mistakes, focus on the future, and set goals to save money, our proposed method frames the savings task in cyclical terms, emphasizing the present. Across the studies, individuals who used our proposed cyclical savings method, compared with individuals who used a linear savings method, provided an average of 74% higher savings estimates and saved an average of 78% more money. We also found that the cyclical savings method was more efficacious because it increased implementation planning and lowered future optimism regarding saving money.
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Massimiliano Ostinelli, David Luna & Torsten Ringberg
Journal of Consumer Psychology, forthcoming
Abstract:
Previous embodied cognition research suggests that "up" is associated with positivity (e.g., good, divine), whereas "down" is associated with negativity (e.g., bad, evil). We focus on the effect of vertical movements on consumer behavior and go beyond investigating mere affective associations of verticality. In five studies, we provide evidence that the mental simulation of vertical movements has counterintuitive effects on behavior - that is, imagining moving up hampers motivation and performance by boosting self-worth. A pilot study shows that the imagination of vertical movements affects self-worth. Studies 1, 2 and 3 show that imagining upward movements (e.g., taking an elevator ride up or taking off in an airplane) diminishes motivation as well as performance. Studies 4 and 5 show that imagining moving upward (downward) makes people feel better (worse) about themselves which, in turn, decreases (increases) their motivation to succeed on a subsequent task, hence worsening (improving) performance. This occurs independently of respondents' mood.
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Habitual entrepreneurs: Possible cases of entrepreneurship addiction?
April Spivack, Alexander McKelvie & Michael Haynie
Journal of Business Venturing, forthcoming
Abstract:
We examine the underlying psychological processes that may motivate habitual entrepreneurs to engage in entrepreneurship repeatedly. By drawing on the psychology literature on behavioral addictions, such as workaholism and Internet use, we develop a framework that defines the symptomatology of what we identify as a "behavioral addiction to entrepreneurship." Through interviews with two habitual entrepreneurs, we demonstrate how these addiction symptoms manifest in the entrepreneurial context. We also demonstrate how psychological, emotional, and physiological aspects of the entrepreneurial experience reinforce a behavioral addiction to entrepreneurship. Our theorizing offers insights into the psychological origins of repeated engagement in venture creation activities and yields insights into possible "dark side" of entrepreneurship outcomes.
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Kelly Goldsmith & Ravi Dhar
Journal of Experimental Psychology: Applied, December 2013, Pages 358-366
Abstract:
People are frequently challenged by goals that demand effort and persistence. As a consequence, philosophers, psychologists, economists, and others have studied the factors that enhance task motivation. Using a sample of undergraduate students and a sample of working adults, we demonstrate that the manner in which an incentive is framed has implications for individuals' task motivation. In both samples we find that individuals are less motivated when an incentive is framed as a means to accrue a gain (positive framing) as compared with when the same incentive is framed as a means to avoid a loss (negative framing). Further, we provide evidence for the role of the negativity bias in this effect, and highlight specific populations for whom positive framing may be least motivating. Interestingly, we find that people's intuitions about when they will be more motivated show the opposite pattern, with people predicting that positively framed incentives will be more motivating than negatively framed incentives. We identify a lay belief in the positive correlation between enjoyment and task motivation as one possible factor contributing to the disparity between predicted and actual motivation as a result of the framing of the incentive. We conclude with a discussion of the managerial implications for these findings.
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Crowding Out in the Labor Market: A Prosocial Setting is Necessary
Tanjim Hossain & King King Li
Management Science, forthcoming
Abstract:
Recent studies, mostly from prosocial settings, suggest that monetary rewards may crowd out effort exertion by economic agents. We design a field experiment with data entry workers to investigate the extent of such crowding-out effects in a labor market. Using simple variations in the job description of a task, we induce a natural work setting under the work frame and emphasize social preference under the social frame. We find that crowding out of labor participation critically depends on framing - whereas small monetary rewards reduce the participation rate under the social frame, the participation rate is nondecreasing in the wage rate under the work frame. Moreover, among the workers who participate in the task, those who receive a positive wage perform a considerably higher amount of work than those who are paid zero wage under either frame. Thus, there is weak evidence of crowding out only when the task is explicitly given a prosocial flavor and not under a regular work setting. Furthermore, emphasizing social preference in the labor market in such a way reduces the overall labor supply and seems to have an adverse effect on the quality of work.
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An opportunity cost model of subjective effort and task performance
Robert Kurzban et al.
Behavioral and Brain Sciences, December 2013, Pages 661-679
Abstract:
Why does performing certain tasks cause the aversive experience of mental effort and concomitant deterioration in task performance? One explanation posits a physical resource that is depleted over time. We propose an alternative explanation that centers on mental representations of the costs and benefits associated with task performance. Specifically, certain computational mechanisms, especially those associated with executive function, can be deployed for only a limited number of simultaneous tasks at any given moment. Consequently, the deployment of these computational mechanisms carries an opportunity cost - that is, the next-best use to which these systems might be put. We argue that the phenomenology of effort can be understood as the felt output of these cost/benefit computations. In turn, the subjective experience of effort motivates reduced deployment of these computational mechanisms in the service of the present task. These opportunity cost representations, then, together with other cost/benefit calculations, determine effort expended and, everything else equal, result in performance reductions. In making our case for this position, we review alternative explanations for both the phenomenology of effort associated with these tasks and for performance reductions over time. Likewise, we review the broad range of relevant empirical results from across sub-disciplines, especially psychology and neuroscience. We hope that our proposal will help to build links among the diverse fields that have been addressing similar questions from different perspectives, and we emphasize ways in which alternative models might be empirically distinguished.
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Suppressing thoughts of evaluation while being evaluated
Michael Slepian, Masanori Oikawa & Joshua Smyth
Journal of Applied Social Psychology, forthcoming
Abstract:
Thought suppression can cause ironic increases in the occurrence of intrusive thoughts. Intrusive thoughts of evaluation could be especially disruptive while undergoing evaluation. Such a context, however, could help suppression efforts as the context provides an external source for which to attribute suppression failures. When suppressing thoughts of evaluation in a non-evaluative context (a context-content mismatch), typical ironic effects of thought suppression occurred. There was no increased accessibility of evaluation, however, when suppressing evaluation in an evaluative context (a context-content match), which allowed for attributing intrusive thoughts to the context, rather than the self, making suppression easier. Suppressing thoughts of evaluation may be beneficial in an evaluative context, suggesting that the consequences of willful suppression are moderated by context.
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I endeavor to make it: Effort increases valuation of subsequent monetary reward
Qingguo Ma, Liang Meng & Qiang Shen
Behavioural Brain Research, 15 March 2014, Pages 1-7
Abstract:
Although it is commonly accepted that the amount of effort we put into accomplishing a task would exert an influence on subsequent reward processing and outcome evaluation, whether effort is incorporated as a cost or it would increase the valuation of concomitant reward is still under debate. In this study, EEGs were recorded while subjects performed calculation tasks that required different amount of effort, correct responses of which were followed by either no reward or fixed compensation. Results showed that high effort induced larger differentiated FRN responses to the reward and non-reward discrepancy across two experimental conditions. Furthermore, P300 manifested valence effect during reward feedback, with more positive amplitudes for reward than for non-reward only in the high effort condition. These results suggest that effort might increase subjective evaluation towards subsequent reward.