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Denver M.Y. Brown and Steven R. Bray

mental fatigue also revealed a medium to large effect ( d  = 0.74) of mental fatigue on subsequent self-control task performance ( Clarkson, Otto, Hassey, & Hirt, 2016 ). Baumeister and Vohs ( 2016 ) suggest that heightened perceptions of mental fatigue may be indicative of depleted resources (i.e., ego

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Kristy Martin, Kevin G. Thompson, Richard Keegan and Ben Rattray

Mental fatigue is a change in psychobiological state caused by prolonged periods of demanding cognitive activity ( Marcora, Staiano, & Manning, 2009 ). Aside from the detrimental effect of mental fatigue on cognition ( Boksem, Meijman, & Lorist, 2005 , 2006 ; Van der Linden, Frese, & Meijman

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Robert J. Kowalsky, Sophy J. Perdomo, John M. Taormina, Christopher E. Kline, Andrea L. Hergenroeder, Jeffrey R. Balzer, John M. Jakicic and Bethany Barone Gibbs

period. 21 Therefore, we examined the acute (same day) effect of alternating between sitting and standing postures every 30 minutes in a simulated office setting and over a full workday on subjective levels of discomfort, physical fatigue, mental fatigue, and sleepiness. We hypothesized that using a sit

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Walter J. Rejeski and Paul M. Ribisl

The purpose of this study was to examine the effects of anticipated task duration on ratings of perceived exertion during treadmill running. Male subjects.(N = 15) completed two separate runs on a motor-driven treadmill at 85% V02 max. During one trial, subjects ran for a period of 20 minutes, while for a second trial, subjects were led to believe that they would be running for 30 minutes. In each case, the trials were terminated at the 20-minute mark. Ratings of perceived exertion, heart rates, respiratory rates, and ventilatory minute volumes were collected across each trial. Results supported the supposition that the anticipation of continued performance mediated ratings of effort expenditure. This effect was obtained only during moderate work levels and was in contrast to research examining mental fatigue.

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Kim Gammage, Rachel Arnold, Lori Dithurbide, Alison Ede, Karl Erickson, Blair Evans, Larkin Lamarche, Sean Locke, Eric Martin and Kathleen Wilson

behavior. Self and Identity, 18, 227–246. doi: 10.1080/15298868.2018.1436084 Journal website: Author website: Mental Fatigue Research: Where Do Things Stand and Where Do They Need to Go? Mental fatigue is

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Thomas Finkenzeller, Sabine Würth, Michael Doppelmayr and Günter Amesberger

of the used Eriksen task leading to almost no errors. In the future, more complex Eriksen tasks that provoke more errors could be used to prove the robustness of the present results. The observed higher error rate on the congruent stimuli might be an effect of mental fatigue ( Lorist et al., 2000

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Maxime Deshayes, Corentin Clément-Guillotin and Raphaël Zory

activities (for a review, see Morishita et al., 2013 ). This relationship is very sensitive and may be influenced by exposure to psychological and environmental factors during energy expenditure tasks, such as self-task motivation ( Blanchfield, Hardy, de Morree, Staiano, & Marcora, 2014 ) or mental fatigue

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Jonathan Rhodes, Jon May, Jackie Andrade and David Kavanagh

imagery training and support. At the end of the study, vividness of the goal imagery was measured again on the same 1–10 scale. Results During the initial session, participants indicated that there were areas of their performance they “struggled with,” specifically, “overthinking” ( n  = 9, 38%), “mental