Moreover, Lange and Eggert’s (2014) findings in Study 1 were
inconsistent withWang and Dvorak’s (2010) study concerning the
effects of glucose ingestion on ego-depletion. However, there was
one notable difference between these two studies that is worth mentioning
because it often goes unnoticed in the ego-depletion
literature. Specifically, both Lange and Eggert (2014) andWang and
Dvorak (2010) used a decision task which forced participants to
choose between a large delayed reward and a smaller immediate
reward. However,Wang and Dvorak’s (2010) participants were presented
with rewards. This procedure facilitates a real “acquisition
experience” which is ego-depleting (Hsee, Yang, Li, & Shen, 2009).
That is, in Wang and Dvorak’s experiment the decision to discount
monetary rewards was consequential as participants expected
to receive a reward. In contrast, in Lange and Eggert’s experiment
(Study 1), participants hypothetically chose between a large delayed
reward and a smaller immediate reward. Hence, participants’ decision
to choose a delayed reward was less consequential (if at all)
and hence ego depleting (see also Lange, Seer, Rapior, Rose, & Eggert,
2014). Unfortunately, Lange and Eggert (2014) did not include a
control group to examine whether their tasks were ego-depleting.
This distinction between hypothetical decisions and real decisions
is equivalent to Kahneman’s (1994) distinction between
experienced utility and predicted utility and consistent with studies
showing substantive inconsistencies between
Moreover, Lange and Eggert’s (2014) findings in Study 1 wereinconsistent withWang and Dvorak’s (2010) study concerning theeffects of glucose ingestion on ego-depletion. However, there wasone notable difference between these two studies that is worth mentioningbecause it often goes unnoticed in the ego-depletionliterature. Specifically, both Lange and Eggert (2014) andWang andDvorak (2010) used a decision task which forced participants tochoose between a large delayed reward and a smaller immediatereward. However,Wang and Dvorak’s (2010) participants were presentedwith rewards. This procedure facilitates a real “acquisitionexperience” which is ego-depleting (Hsee, Yang, Li, & Shen, 2009).That is, in Wang and Dvorak’s experiment the decision to discountmonetary rewards was consequential as participants expectedto receive a reward. In contrast, in Lange and Eggert’s experiment(Study 1), participants hypothetically chose between a large delayedreward and a smaller immediate reward. Hence, participants’ decisionto choose a delayed reward was less consequential (if at all)and hence ego depleting (see also Lange, Seer, Rapior, Rose, & Eggert,2014). Unfortunately, Lange and Eggert (2014) did not include acontrol group to examine whether their tasks were ego-depleting.This distinction between hypothetical decisions and real decisionsis equivalent to Kahneman’s (1994) distinction betweenexperienced utility and predicted utility and consistent with studiesshowing substantive inconsistencies between
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