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Incentive theory, or the "pull theory" of motivation, suggests that external rewards primarily drive behavior. Individuals are motivated to engage in activities when they anticipate a desirable outcome. This is why people often work hard for promotions or study intensively to achieve high grades. These incentives can be tangible, physical rewards such as money or promotions, or intangible, non-physical rewards like praise and social recognition.
The theory differentiates between...
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Incentives for smoking cessation.

Caitlin Notley1, Sarah Gentry, Jonathan Livingstone-Banks

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Financial incentives significantly boost long-term smoking cessation rates in general populations and pregnant women. These incentives, including cash or vouchers, demonstrate sustained effectiveness even after withdrawal, supporting their use in public health strategies.

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Area of Science:

  • Public Health
  • Behavioral Science
  • Addiction Medicine

Background:

  • Financial incentives (monetary or vouchers) are frequently employed to initiate, reinforce, and sustain behavior change, notably smoking cessation.
  • These interventions have been implemented across diverse settings, including workplaces, clinical environments, hospitals, and community programs.

Purpose of the Study:

  • To evaluate the long-term efficacy of financial incentives and contingency management programs for achieving smoking cessation.

Main Methods:

  • Conducted a systematic review of randomized controlled trials (RCTs) assessing incentive-based smoking cessation schemes.
  • Included studies with mixed populations and pregnant smokers, analyzing abstinence rates at longest follow-up (≥6 months or end of pregnancy).
  • Utilized a Mantel-Haenzel random-effects model for data pooling, reporting results as risk ratios (RRs) with 95% confidence intervals (CIs).

Main Results:

  • Thirty-three mixed-population studies (over 21,600 participants) showed a pooled RR of 1.49 (95% CI 1.28 to 1.73) for quitting with incentives.
  • Incentive effectiveness persisted even when follow-up extended beyond the incentive period.
  • Ten studies involving 2,571 pregnant women yielded a pooled RR of 2.38 (95% CI 1.54 to 3.69) favoring incentives for cessation.

Conclusions:

  • High-certainty evidence indicates financial incentives significantly improve long-term smoking cessation rates in mixed populations.
  • Moderate-certainty evidence suggests incentive schemes are effective for smoking cessation in pregnant women, extending to post-partum.
  • Further research should investigate optimal incentive structures (e.g., cash vs. self-deposits, varying amounts) across diverse populations.