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Gepubliceerd in:

01-10-2014

Financial motivation undermines potential enjoyment in an intensive diet and activity intervention

Auteurs: Arlen C. Moller, Joanna Buscemi, H. Gene McFadden, Donald Hedeker, Bonnie Spring

Gepubliceerd in: Journal of Behavioral Medicine | Uitgave 5/2014

Abstract

The use of material incentives in healthy lifestyle interventions is becoming widespread. However, self-determination theory (SDT) posits that when material incentives are perceived as controlling, they undermine intrinsic motivation. We analyzed data from the Make Better Choices trial—a trial testing strategies for improving four risk behaviors: low fruit–vegetable intake, high saturated fat intake, low physical activity, and high sedentary activity. At baseline, participants reported the degree to which financial incentives were an important motivator (financial motivation); self-reported enjoyment of each behavior was assessed before and after the 3-week incentivization phase. Consistent with SDT, after controlling for general motivation and group assignment, lower financial motivation predicted more adaptive changes in enjoyment. Whereas participants low in financial motivation experienced adaptive changes, adaptive changes were suppressed among those high in financial motivation.

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Moderation: Gender To investigate whether gender moderated the relation between Financial Motivation and changes in liking FV, Fat, PA, and Sed, we next ran the above MANCOVA model adding Gender, and the 3-way interaction of Financial Motivation × Time × Gender. This 3-way interaction did not significantly predict changes in liking FV [F(1, 167) = 0.62, p = .43], liking Fat [F(1, 167) = 0.04, p = .85], liking PA [F(1, 167) = 1.28, p = .26], or liking Sed [F(1, 167) = 1.27, p = .26)].

SES To investigate whether socioeconomic status moderated the relation between Financial Motivation and changes in liking FV, Fat, PA, and Sed, we next ran the above MANCOVA model adding estimates of household income, and the 3-way interaction of Financial Motivation × Time × Income. This 3-way interaction did not significantly predict changes in liking FV [F(1, 167) = 1.76, p = .19], liking Fat [F(1, 167) = 0.23, p = .63], liking PA [F(1, 167) = 0.64, p = .43], or liking Sed [F(1, 167) = 0.98, p = .33)]. We note, however, that our measure of annual household income was negatively skewed; the modal response (28 %) reported an annual household income greater than $75,000, potentially suppressing our ability to detect Financial Motivation × Time × Income interactions.

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Titel: Financial motivation undermines potential enjoyment in an intensive diet and activity intervention
Auteurs: Arlen C. Moller
Joanna Buscemi
H. Gene McFadden
Donald Hedeker
Bonnie Spring
Publicatiedatum: 01-10-2014
Uitgeverij: Springer US
Gepubliceerd in: Journal of Behavioral Medicine / Uitgave 5/2014
Print ISSN: 0160-7715
Elektronisch ISSN: 1573-3521
DOI: https://doi.org/10.1007/s10865-013-9542-5

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