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Impaired performance as a source of reduced energy investment in judgement under stressors

Arne Roets (UGent) and Alain Van Hiel (UGent)
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Abstract
Adaptive mechanisms to protect cognitive performance under stressors through compensation in energy investment have previously received much research attention. However, stressors have also often been found to substantially reduce both performance and investment. The mechanisms underlying this dual negative effect are still unclear. This study tested the hypothesis that stressors can immediately hamper performance, which in turn reduces energy investment in later phases. In an experiment (N = 103), we compared control and stressor conditions (noise or time pressure), investigating the effects of stressors on performance and information-sampling investment (as behavioural measure of energy investment) in two phases of a judgement task. The results showed an instant negative effect of stressors on performance and a delayed negative effect on information-sampling investment. Furthermore, impaired initial performance predicted the decline in investment over time. Finally, the effects of stressors on investment decline were partially mediated through initial performance level. The present findings contribute to theories aiming to explain the relationship between hampered performance and motivational losses.
Keywords
CLOSURE, TIME PRESSURE, DECISION-MAKING, NEED, CAPACITY, MIND, Investment, Judgement, Noise, Performance, Stressors, Time pressure

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Chicago
Roets, Arne, and Alain Van Hiel. 2011. “Impaired Performance as a Source of Reduced Energy Investment in Judgement Under Stressors.” Journal of Cognitive Psychology 23 (5): 625–632.
APA
Roets, Arne, & Van Hiel, A. (2011). Impaired performance as a source of reduced energy investment in judgement under stressors. JOURNAL OF COGNITIVE PSYCHOLOGY, 23(5), 625–632.
Vancouver
1.
Roets A, Van Hiel A. Impaired performance as a source of reduced energy investment in judgement under stressors. JOURNAL OF COGNITIVE PSYCHOLOGY. 2011;23(5):625–32.
MLA
Roets, Arne, and Alain Van Hiel. “Impaired Performance as a Source of Reduced Energy Investment in Judgement Under Stressors.” JOURNAL OF COGNITIVE PSYCHOLOGY 23.5 (2011): 625–632. Print.
@article{2109470,
  abstract     = {Adaptive mechanisms to protect cognitive performance under stressors through compensation in energy investment have previously received much research attention. However, stressors have also often been found to substantially reduce both performance and investment. The mechanisms underlying this dual negative effect are still unclear. This study tested the hypothesis that stressors can immediately hamper performance, which in turn reduces energy investment in later phases. In an experiment (N = 103), we compared control and stressor conditions (noise or time pressure), investigating the effects of stressors on performance and information-sampling investment (as behavioural measure of energy investment) in two phases of a judgement task. The results showed an instant negative effect of stressors on performance and a delayed negative effect on information-sampling investment. Furthermore, impaired initial performance predicted the decline in investment over time. Finally, the effects of stressors on investment decline were partially mediated through initial performance level. The present findings contribute to theories aiming to explain the relationship between hampered performance and motivational losses.},
  author       = {Roets, Arne and Van Hiel, Alain},
  issn         = {2044-5911},
  journal      = {JOURNAL OF COGNITIVE PSYCHOLOGY},
  keyword      = {CLOSURE,TIME PRESSURE,DECISION-MAKING,NEED,CAPACITY,MIND,Investment,Judgement,Noise,Performance,Stressors,Time pressure},
  language     = {eng},
  number       = {5},
  pages        = {625--632},
  title        = {Impaired performance as a source of reduced energy investment in judgement under stressors},
  url          = {http://dx.doi.org/10.1080/20445911.2011.550569},
  volume       = {23},
  year         = {2011},
}

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