Abstract
The strength model of self-control proposes that all acts of self-control are energized by one global limited resource that becomes temporarily depleted by a primary self-control task, leading to impaired self-control performance in secondary self-control tasks. However, failed replications have cast doubt on the existence of this so-called ego depletion effect. Here, we investigated between-task (i.e., variation in self-control tasks) and within-task variation (i.e., task duration) as possible explanations for the conflicting literature on ego depletion effects. In a high-powered experiment (N = 709 participants), we used two established self-control tasks (Stroop task, transcription task) to test how variations in the duration of primary and secondary self-control tasks (2, 4, 8, or 16 min per task) affect the occurrence of an ego depletion effect (i.e., impaired performance in the secondary task). In line with the ego depletion hypothesis, subjects perceived longer lasting secondary tasks as more self-control demanding. Contrary to the ego depletion hypothesis, however, performance did neither suffer from prior self-control exertion, nor as a function of task duration. If anything, performance tended to improve when the primary self-control task lasted longer. These effects did not differ between the two self-control tasks, suggesting that the observed null findings were independent of task type.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
References
Baumeister, R. F., Bratslavsky, E., Muraven, M., & Tice, D. M. (1998). Ego depletion: Is the active self a limited resource? Journal of Personality and Social Psychology, 74(5), 1252–1265. https://doi.org/10.1037/0022-3514.74.5.1252.
Baumeister, R. F., & Vohs, K. D. (2016). Misguided effort with elusive implications. Perspectives on Psychological Science, 11(4), 574–575. https://doi.org/10.1177/1745691616652878.
Baumeister, R. F., Vohs, K. D., & Tice, D. M. (2007). The strength model of self-control. Current Directions in Psychological Science, 16(6), 351–355. https://doi.org/10.1111/j.1467-8721.2007.00534.x.
Beedie, C. J., & Lane, A. M. (2012). The role of glucose in self-control: Another look at the evidence and an alternative conceptualization. Personality and Social Psychology Review, 16(2), 143–153. https://doi.org/10.1177/1088868311419817.
Bergkvist, L., & Rossiter, J. R. (2007). The predictive validity of multiple-item versus single-item measures of the same constructs. Journal of Marketing Research, 44(2), 175–184. https://doi.org/10.1509/jmkr.44.2.175.
Bertrams, A., Englert, C., & Dickhäuser, O. (2010). Self-control strength in the relation between trait test anxiety and state anxiety. Journal of Research in Personality, 44(6), 738–741. https://doi.org/10.1016/j.jrp.2010.09.005.
Bieleke, M., & Wolff, W. (2017). That escalated quickly—planning to ignore RPE can backfire. Frontiers in Physiology, 8, 736. https://doi.org/10.3389/fphys.2017.00736.
Blázquez, D., Botella, J., & Suero, M. (2017). The debate on the ego-depletion effect: Evidence from meta-analysis with the p-uniform method. Frontiers in Psychology, 8, 2015–2018. https://doi.org/10.3389/fpsyg.2017.00197.
Carter, E. C., & McCullough, M. E. (2013). Is ego depletion too incredible? Evidence for the overestimation of the depletion effect. Behavioral and Brain Sciences, 36(6), 683–684. https://doi.org/10.1017/S0140525X13000952.
Carter, E. C., & McCullough, M. E. (2014). Publication bias and the limited strength model of self-control: has the evidence for ego depletion been overestimated? Frontiers in Psychology, 5, 823. https://doi.org/10.3389/fpsyg.2014.00823.
Cohen, J. (2013). Statistical power analysis for the behavioral sciences. Abingdon: Routledge.
Crump, M. J. C., McDonnell, J. V., & Gureckis, T. M. (2013). Evaluating amazon’s mechanical turk as a tool for experimental behavioral research. PLoS One, 8, 3. https://doi.org/10.1371/journal.pone.0057410.
Dang, J. (2018). An updated meta-analysis of the ego depletion effect. Psychological Research, 82(4), 645–651. https://doi.org/10.1007/s00426-017-0862-x.
DeLuca, J. (2005). Fatigue as a window to the brain. Cambridge: MIT Press.
Eastwood, J. D., Frischen, A., Fenske, M. J., & Smilek, D. (2012). The unengaged mind: Defining boredom in terms of attention. Perspectives on Psychological Science, 7(5), 482–495. https://doi.org/10.1177/1745691612456044.
Faul, F., Erdfelder, E., Lang, A.-G., & Buchner, A. (2007). G*Power 3: A flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behavior Research Methods, 39(2), 175–191. https://doi.org/10.3758/BF03193146.
Feng, S. F., Schwemmer, M., Gershman, S. J., & Cohen, J. D. (2014). Multitasking versus multiplexing: Toward a normative account of limitations in the simultaneous execution of control-demanding behaviors. Cognitive, Affective and Behavioral Neuroscience, 14(1), 129–146. https://doi.org/10.3758/s13415-013-0236-9.
Francis, Z., Milyavskaya, M., Lin, H., & Inzlicht, M. (2018). Development of a within-subject, repeated-measures ego-depletion paradigm. Social Psychology, 49(5), 271–286. https://doi.org/10.1027/1864-9335/a000348.
Garner, K. G., & Dux, P. E. (2015). Training conquers multitasking costs by dividing task representations in the frontoparietal-subcortical system. Proceedings of the National Academy of Sciences, 112(46), 14372–14377. https://doi.org/10.1073/pnas.1511423112.
Govorun, O., & Payne, B. K. (2006). Ego—depletion and prejudice: Separating automatic and controlled components. Social Cognition, 24(2), 111–136. https://doi.org/10.1521/soco.2006.24.2.111.
Hagger, M. S., & Chatzisarantis, N. L. D. (2016). Commentary: Misguided effort with elusive implications, and sifting signal from noise with replication science. Frontiers in Psychology, 7(October), 255–264. https://doi.org/10.3389/fpsyg.2016.00621.
Hagger, M. S., Chatzisarantis, N. L. D., Alberts, H., Anggono, C. O., Batailler, C., Birt, A. R., … et al. (2016). A multilab preregistered replication of the ego-depletion effect. Perspectives on Psychological Science, 11(4), 546–573. https://doi.org/10.1177/1745691616652873.
Hagger, M. S., Wood, C., Stiff, C., & Chatzisarantis, N. L. D. (2010). Ego depletion and the strength model of self-control: A meta-analysis. Psychological Bulletin, 136(4), 495–525. https://doi.org/10.1037/a0019486.
Inzlicht, M., & Schmeichel, B. J. (2012). What is ego depletion? Toward a mechanistic revision of the resource model of self-control. Perspectives on Psychological Science, 7(5), 450–463. https://doi.org/10.1177/1745691612454134.
Inzlicht, M., Shenhav, A., & Olivola, C. Y. (2018). The effort paradox: effort is both costly and valued. Trends in Cognitive Sciences, 22(4), 337–349. https://doi.org/10.1016/j.tics.2018.01.007.
Job, V., Dweck, C. S., & Walton, G. M. (2010). Ego depletion-is it all in your head? Implicit theories about willpower affect self-regulation. Psychological Science, 21(11), 1686–1693. https://doi.org/10.1177/0956797610384745.
Kool, W., & Botvinick, M. (2013). The intrinsic cost of cognitive control. Behavioral and Brain Sciences, 36(6), 697–698. https://doi.org/10.1017/S0140525X1300109X.
Kurzban, R., Duckworth, A., Kable, J. W., & Myers, J. (2013). An opportunity cost model of subjective effort and task performance. Behavioral and Brain Sciences, 36(6), 661–679. https://doi.org/10.1017/S0140525X12003196.
Lee, N., Chatzisarantis, N., & Hagger, M. S. (2016). Adequacy of the sequential-task paradigm in evoking ego-depletion and how to improve detection of ego-depleting phenomena. Frontiers in psychology, 7, 136. https://doi.org/10.3389/fpsyg.2016.00136.
Lenth, R. (2018). emmeans: Estimated marginal means, aka least-squares means. R package version 1.3.1. https://cran.r-project.org/web/packages/emmeans/index.html.
Litman, L., Robinson, J., & Abberbock, T. (2017). TurkPrime.com: A versatile crowdsourcing data acquisition platform for the behavioral sciences. Behavior Research Methods, 49(2), 433–442. https://doi.org/10.3758/s13428-016-0727-z.
Lurquin, J. H., Michaelson, L. E., Barker, J. E., Gustavson, D. E., Von Bastian, C. C., Carruth, N. P., & Miyake, A. (2016). No evidence of the ego-depletion effect across task characteristics and individual differences: A pre-registered study. PLoS One, 11(2), 1–20. https://doi.org/10.1371/journal.pone.0147770.
MacLeod, C. M. (1991). Half a century of research on the Stroop effect: an integrative review. Psychological Bulletin, 109(2), 163–203. https://doi.org/10.1037//0033-2909.109.2.163.
Marcora, S. M., Staiano, W., & Manning, V. (2009). Mental fatigue impairs physical performance in humans. Journal of Applied Physiology, 106(3), 857–865. https://doi.org/10.1152/japplphysiol.91324.2008.
Mills, C., & Christoff, K. (2018). Finding consistency in boredom by appreciating its instability. Trends in Cognitive Sciences, 22(9), 744–747. https://doi.org/10.1016/j.tics.2018.07.001.
Muraven, M., & Baumeister, R. F. (2000). Self-regulation and depletion of limited resources: Does self-control resemble a muscle? Psychological Bulletin, 126(2), 247–259. https://doi.org/10.1037/0033-2909.126.2.247.
Muraven, M., Tice, M. D., & Baumeister, R. F. (1998). Self-control as a limited resource: Regulatory depletion patterns. Journal of Personality and Social Psychology, 74(3), 774–789.
Musslick, S., Dey, B., Özcimder, K., Patwary, M. A., Willke, T. L., & Cohen, J. D. (2016). Parallel processing capability versus efficiency of representation in neural networks. 15th Neural Computation and Psychology Workshop, 1, 13–14. https://doi.org/10.13140/RG.2.2.30076.54407.
Pattyn, N., Van Cutsem, J., Dessy, E., & Mairesse, O. (2018). Bridging exercise science, cognitive psychology, and medical practice: Is “cognitive fatigue” a remake of “the emperor’s new clothes”? Frontiers in Psychology, 9((SEP)), 1–13. https://doi.org/10.3389/fpsyg.2018.01246.
R Core Team (2018). R: A language and environment for statistical computing. Vienna: R Foundation for Statistical Computing. https://www.r-project.org/.
Richeson, J. A., & Shelton, J. N. (2003). Effects of interracial contact on executive function. Psychological Science, 14(3), 1–5. https://doi.org/10.1111/1467-9280.03437.
Sandry, J., Genova, H. M., Dobryakova, E., DeLuca, J., & Wylie, G. (2014). Subjective cognitive fatigue in multiple sclerosis depends on task length. Frontiers in Neurology, 5, 1–7. https://doi.org/10.3389/fneur.2014.00214.
Savani, K., & Job, V. (2017). Reverse ego-depletion: Acts of self-control can improve subsequent performance in Indian cultural contexts. Journal of Personality and Social Psychology, 113(4), 589–607. https://doi.org/10.1037/pspi0000099.
Schmeichel, B. J., & Baumeister, R. F. (2010). Effortful attention control. In B. Bruya (Ed.), Effortless attention: A new perspective in the cognitive science of attention and action (pp. 29–50). Cambridge: MIT Press.
Shenhav, A., Musslick, S., Lieder, F., Kool, W., Griffiths, T. L., Cohen, J. D., & Botvinick, M. M. (2017). Toward a rational and mechanistic account of mental effort. Annual Review of Neuroscience, 40(1), 99–124. https://doi.org/10.1146/annurev-neuro-072116-031526.
Singman, H., Bolker, B., Westfall, J. & Aust, F. (2018). afex: Analysis of Factorial Experiments. R package version 0.20-2. https://cran.r-project.org/web/packages/afex/index.html.
Sripada, C., Kessler, D., & Jonides, J. (2016). Sifting signal from noise with replication science. Perspectives on Psychological Science, 11(4), 576–578. https://doi.org/10.1177/1745691616652875.
Stroop, J. R. (1935). Studies of interference. Journal of Experimental Psychology, 18(6), 643–662. https://doi.org/10.1037/h0054651.
Vadillo, M. A., Gold, N., & Osman, M. (2016). The bitter truth about sugar and willpower: The limited evidential value of the glucose model of ego depletion. Psychological Science, 27(9), 1207–1214. https://doi.org/10.1177/0956797616654911.
Vohs, K. D., & Heatherton, T. F. (2000). Self-regulatory failure: A resource-depletion approach. Psychological Science, 11(3), 249–254. https://doi.org/10.1111/1467-9280.00250.
Wickham, H. (2017). tidyverse: Easily Install and Load the ‘Tidyverse’. R package version 1.2.1. https://cran.r-project.org/web/packages/tidyverse/index.html.
Wilke, C. O. (2019). cowplot: Streamlined Plot Theme and Plot Annotations for ‘ggplot2’. R package version 0.9.4. https://cran.r-project.org/web/packages/cowplot/index.html.
Wolff, W., Baumann, L., & Englert, C. (2018). Self-reports from behind the scenes: Questionable research practices and rates of replication in ego depletion research. PLoS One, 13(6), 1–11. https://doi.org/10.1371/journal.pone.0199554.
Wolff, W., Baumgarten, F., & Brand, R. (2013). Reduced self-control leads to disregard of an unfamiliar behavioral option. Substance Abuse Treatment, Prevention, and Policy, 8(41), 1–6. https://doi.org/10.1186/1747-597X-8-41.
Wolff, W., Schüler, J., Hofstetter, J., Baumann, L., Wolf, L., & Dettmers, C. (2019). Trait self-control outperforms trait fatigue in predicting MS patients’ cortical and perceptual responses to an exhaustive task. Neural Plasticity. https://doi.org/10.1155/2019/8527203.
Xu, X., Demos, K. E., Leahey, T. M., Hart, C. N., Trautvetter, J., Coward, P., … et al. (2014). Failure to replicate depletion of self-control. PLoS One, 9(10), 1–5. https://doi.org/10.1371/journal.pone.0109950.
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Wolff, W., Sieber, V., Bieleke, M. et al. Task duration and task order do not matter: no effect on self-control performance. Psychological Research 85, 397–407 (2021). https://doi.org/10.1007/s00426-019-01230-1
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DOI: https://doi.org/10.1007/s00426-019-01230-1