Ego depletion theory effects
Collection type: Multi-effect Multi-method Multi-lab Replications 32
Collection contains 32 replications of 2 ego depletion effects across 7 methods.
Summary: Replication difficulties appear to exist for ego depletion theory's 2 main predicted effects across 7 methods. Predicted effect #1: Independent researchers appear unable to replicate the finding that glucose consumption counteracts ego depletion, whether self-control is measured via Stroop (Cesario & Corker, 2010, as in Gaillot et al., 2007, Study 7) or future-discounting task (Lange & Eggert, 2014, Study 1, as in Wang & Dvorak, 2010). Predicted effect #2: There also appears to be replication difficulties for the basic ego depletion effect across 5 methods. This is the case whether IV manipulated via thought supppression, video attention task, emotion suppression during video watching, or effortful letter crossing task and also whether DV measured via anagram performance, standardized tests, working memory, or multi-source interference task. Wang et al. (2014) do appear to successfully replicate Inzlicht & Gutsell's (2007) finding that ego depletion led to reduced activity in the anterior cingulate (region previously associated with conflict monitoring), however this finding should be interpretd with caution given potential bias due to analytic flexibility in data exclusions and EEG analyses. Of course, ego depletion may reflect a replicable phenomenon under different conditions, contexts, and/or operationalizations; however, the replication difficulties across these 7 methods suggest ego depletion might be much more nuanced than previously thought. Indeed, alternative models have recently been proposed (e.g., motivation/attention-based accounts, Inzlicht et al., 2014; mental fatigue, Inzlicht & Berkman, 2015) and novel intra-individual paradigms to measure ego depletion have also emerged (Francis, 2014; Francis et al., 2015) that offer promising avenues for future research.