Rank reward elements to build gratitude and status with targets and prevent unfairness with bystanders (gifts, interpersonal, specialness, communication, similarity, trust)
Identify delivery options to magnify effects with targets (visibility, rules, surprise, randomness, timing, control attributions)
Evaluate effect on portfolio (prevent unintended consequences)
Estimate ROI of programs
Perform field experiment to test effectiveness of top few programs versus control group, analyze, and then launch