Although conscientiousness predicts many aspects of motivation, from delay of gratification to higher achievement, its relationship to responses to monetary incentives is surprisingly inconsistent. Several studies have found null or relationships between conscientiousness and behavioral performance in piece-rate, pay-for-performance tasks, in which people earn money for each unit of work completed. In the present study, we examined the role of conscientiousness in effort-related cardiac activity and behavioral performance during a pay-for-performance task. People worked on a self-paced, piece-rate cognitive task in which they earned 1 cent or 5 cents, manipulated within-person, for each correct response. Conscientiousness predicted greater physiological effort (i.e., shorter pre-ejection period [PEP] reactivity) as incentives increased but had no effect on behavioral performance. The findings suggest that conscientiousness is significantly related to effort for piece-rate tasks, and they reinforce a core idea in motivational intensity theory: effort, performance, and persistence are distinct outcomes that often diverge, so drawing conclusions about effort from performance can be complex.
Keywords: conscientiousness; effort; impedance cardiography; incentives; motivation; pre-ejection period.
Perfectionism and Effort-Related Cardiac Activity: Do Perfectionists Try Harder?PLoS One. 2016 Aug 2;11(8):e0160340. doi: 10.1371/journal.pone.0160340. eCollection 2016. PLoS One. 2016. PMID: 27483467 Free PMC article.
Do depressive symptoms "blunt" effort? An analysis of cardiac engagement and withdrawal for an increasingly difficult task.Biol Psychol. 2016 Jul;118:52-60. doi: 10.1016/j.biopsycho.2016.04.068. Epub 2016 May 9. Biol Psychol. 2016. PMID: 27174723 Free PMC article. Clinical Trial.
Creative motivation: creative achievement predicts cardiac autonomic markers of effort during divergent thinking.Biol Psychol. 2014 Oct;102:30-7. doi: 10.1016/j.biopsycho.2014.07.010. Epub 2014 Jul 23. Biol Psychol. 2014. PMID: 25063471 Free PMC article.
Applied economics: The use of monetary incentives to modulate behavior.Prog Brain Res. 2016;229:285-301. doi: 10.1016/bs.pbr.2016.06.010. Epub 2016 Sep 16. Prog Brain Res. 2016. PMID: 27926443 Review.
Incentives for increasing prenatal care use by women in order to improve maternal and neonatal outcomes.Cochrane Database Syst Rev. 2015 Dec 15;(12):CD009916. doi: 10.1002/14651858.CD009916.pub2. Cochrane Database Syst Rev. 2015. PMID: 26671418 Review.