Nanne Kukkonen

Reward prospect increases effort, sometimes only when people have multiple attempts at a task

When an incentive prospect fails to boost engagement, it is often suspected that the test was poorly designed. We challenged this idea and demonstrated how incentive prediction horizon influences effort decision making.

Role: Lead Researcher

Methods: Computerized online experiment, online questionnaire administration, A/B Testing

Tools: JsPsych (JavaScript), Prolific, R

Background

The principle of least effort and a neuroeconomic framework guided the experimental design.

Data Collection

Coded computerized online experiments in jsPsych. Piloted and ran 4 experiments on Prolific.com (N = 45, 49, 48, 50).

Data Analysis & Synthesis

Cleaned up behavioral and questionnaire data and ran logistic and linear mixed-effects regression models in R.

Insights & Recommendations

  • One-off reward prospect might not lead to a boost in engagement

  • Longer reward prediction horizon amortizes the behavioral cost of effort
  • Emphasizing long-term incentives over one-off rewards is likely to improve habit formation and work performance 

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