Challenges and Alternative Explanations
Although self-control has traditionally been thought of as a limited resource that can be depleted, research on cognition, motivation, and affect has begun to challenge this picture. While many studies discuss and provide support for ego depletion, it must be acknowledged that there are currently no available direct measures of ego depletion. The theory of ego depletion relies on the inner workings of an individual's volition, which can only be indirectly tested; therefore, only inferences can be made. Another challenge facing research on ego depletion is the influence of the overall mental conditions of individuals being studied. There is speculation that results may be disrupted in individuals who report experiencing depression and already possess high levels of ego depletion prior to the study. This effect of negative mood could influence the validity of ego depletion studies. Furthermore, the study and measurement of ego depletion may affected by the confounding effect of cognitive dissonance. Researchers have questioned whether subjects are truly experiencing ego depletion, or whether the individuals are merely experiencing cognitive dissonance in the psychological tasks.
Read more about this topic: Ego Depletion
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