Healthier by precommitment.

We tested a voluntary self-control commitment device to help grocery shoppers make healthier food purchases. Participants, who were already enrolled in a large-scale incentive program that discounts the price of eligible groceries by 25%, were offered the chance to put their discount on the line. Agreeing households pledged that they would increase their purchases of healthy food by 5 percentage points above their household baseline for each of 6 months. If they reached that goal, their discount was awarded as usual; otherwise, their discount was forfeited for that month. Thirty-six percent of households that were offered the binding commitment agreed; they subsequently showed an average 3.5-percentage-point increase in healthy grocery items purchased in each of the 6 months; households that declined the commitment and control-group households that were given a hypothetical option to precommit did not show such an increase. These results suggest that self-aware consumers will seize opportunities to create restrictive choice environments for themselves, even at some risk of financial loss.

The relationship between workplace environment and employee health behaviors in a South African workforce.

OBJECTIVE: To determine the relationship between the availability of wellness facilities at worksites and self-reported employee health behaviors (physical activity [PA] and nutrition [NUT]). METHODS: Employers (n = 71) and employees (n = 11472) participated in the South African Healthy Company Index survey. The survey included self-reported clinical measures and lifestyle behaviors. A facility score was calculated, ranging from 0 to 100. Hierarchical linear models were used to calculate the relationship between facility scores and whether employees met PA and NUT guidelines. RESULTS: The mean total facility score was 58.5 ± 25.5. The number of facilities at each worksite accounted for 5.4% of the variance in PA among employees (r = 0.054; P = 0.036). Higher facility scores were associated with better NUT habits among employees. CONCLUSIONS: Employers providing wellness facilities are likely to have employees with better PA and NUT habits.