A stitch in time: Strategic self-control in high school and college students.

One descriptive study plus two randomised field experiments in high-school and college students; sample sizes not obtained

United States; high-school and college students.

Recorded because it is the closest thing to a randomised trial in the situational-self-control programme, and because what it measures is the point. Students were randomly assigned to situation modification, response modulation or no strategy, and the outcome is SELF-REPORTED attainment of self-set academic goals over the FOLLOWING WEEK. Not achievement, not objective, not durable.

Students assigned to situation modification were more likely to report meeting their academic goals during the following week, and in the college study the effect was partially mediated by self-reported decreases in temptation. No effect sizes were obtained.

Low for the randomised contrast.

Unreplicated. Its significance for this archive is what it does not test - no achievement outcome, no objective measure, and a one-week horizon.