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doi:10.22028/D291-32464
Titel: | A preregistered test of competing theories to explain ego depletion effects using psychophysiological indicators of mental effort |
VerfasserIn: | Gieseler, Karolin Loschelder, David D. Job, Veronika Friese, Malte |
Sprache: | Englisch |
Titel: | Motivation Science |
Bandnummer: | 7 |
Heft: | 1 |
Startseite: | 32 |
Endseite: | 45 |
Verlag/Plattform: | American Psychological Association |
Erscheinungsjahr: | 2021 |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | A prominent, hotly debated idea—the “ego depletion” phenomenon—suggests that engaging in effortful, demanding tasks leads to poorer subsequent self-control performance. Several theories seek to explain the emergence of ego depletion effects. The two most prominent ones are the strength model of self-control (Baumeister & Vohs, 2016) and the process model of self-control (Inzlicht & Schmeichel, 2012). Predictions of these models are predominantly identical on the behavioral level. The models’ predictions differ, however, on the level of invested mental effort. The present pre-registered study (N = 179) contrasted these competing predictions combining an established moderator counteracting ego depletion effects (i.e., self-affirmation) and psychophysiological indicators of mental effort (i.e., systolic blood pressure and preejection period). Our data provide moderate evidence for ego depletion—decrements in self-control performance after a high- versus low-demanding task in the nonaffirmed conditions. Self-affirmation had an unexpected effect: Contrary to previous research, self-affirmed participants performed similarly poorly as participants in the high demand + nonaffirmed condition. Although this unexpected finding limited the ability to contrast competing model predictions, it points to hitherto unknown effects of self-affirmation on self-control performance. Systolic blood pressure reactivity emerged as a valid indicator of invested mental effort, but the data show no sign of disengagement after a high-demanding task predicted by the process (but not the strength) model. We explore systolic blood pressure progression across the sequential task paradigm, suggest a testable account for the effects of self-affirmation on self-control performance, and discuss theoretical implications of the results for the two competing models. |
DOI der Erstveröffentlichung: | 10.1037/mot0000183 |
URL der Erstveröffentlichung: | https://psycnet.apa.org/record/2020-53110-001 |
Link zu diesem Datensatz: | hdl:20.500.11880/31485 http://dx.doi.org/10.22028/D291-32464 |
ISSN: | 2333-8121 2333-8113 |
Datum des Eintrags: | 6-Jul-2021 |
Fakultät: | HW - Fakultät für Empirische Humanwissenschaften und Wirtschaftswissenschaft |
Fachrichtung: | HW - Psychologie |
Professur: | HW - Prof. Dr. Malte Friese |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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