Journal
MOTIVATION SCIENCE
Volume 8, Issue 3, Pages 230-238Publisher
EDUCATIONAL PUBLISHING FOUNDATION-AMERICAN PSYCHOLOGICAL ASSOC
DOI: 10.1037/mot0000269
Keywords
choice; deliberation; effort; cardiovascular response
Categories
Funding
- Swiss National Science Foundation [SNF 100014_185348]
- Swiss National Science Foundation (SNF) [100014_185348] Funding Source: Swiss National Science Foundation (SNF)
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This experiment investigated how personal choice of task characteristics affects resource mobilization, measured through effort-related cardiac response during tasks of low and unclear difficulty. The results demonstrate that personal choice justifies higher effort, especially when task difficulty is unclear.
This experiment investigated how the personal choice of task characteristics influences resource mobilization assessed as effort-related cardiac response during a task of clearly low versus unclear (but also low) difficulty. We expected that the personal color choice of memory task stimuli would justify higher effort during task performance than external color assignment. Applying the logic of motivational intensity theory (MIT; Brehm et al., 1983; Brehm & Self, 1989), we further predicted that the personal choice of the stimuli's color would directly lead to higher effort intensity than external color assignment when task difficulty was unclear but not when the task difficulty was clear. When task difficulty was low and clear, we expected actual effort to be low in general. because high resources are not necessary for a clearly easy task. Results were as expected: When task difficulty was unclear, participants who had personally chosen the stimuli's color showed significantly stronger cardiac preejection period reactivity, reflecting higher effort, than those in the other three conditions. These findings provide first evidence that personal choice justifies relatively high effort and further support the principles of MIT regarding the critical role of task difficulty for resource mobilization.
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