Effects of gratitude and cognitive load on delay discounting: replication failures in two experiments
Abstract
Delay discounting is the phenomenon whereby the value of future rewards is discounted as a
function of time. Individual differences in discounting rate have been linked to a range of
correlates and research has suggested a lower discounting rate to be more adaptive. One
mechanism that may reduce discounting rate involves effortful self-regulation achieved through
the engagement of executive function processes. This mechanism, however, is reliant on a
limited-capacity cognitive system. Cognitively demanding contexts and low baseline capacity
therefore create vulnerability to higher discounting rates and the associated negative sequelae.
The affective state of gratitude has been proposed as an alternative mechanism to reduce
discounting rate. It has been described as independent of effortful self-regulation with the
implication that it is not demanding of limited cognitive resources. However, this had not been
tested experimentally. The current research program comprised two experiments. The primary
aims were as follows: (1) to replicate previous findings showing the effects of gratitude and
cognitive load on discounting rate, and (2) to extend previous findings by investigating whether
the effect of one of these predictors depends on the level of the other. [...]