“…Some procrastination intervention studies have used within‐group methodologies and assessed procrastination pre‐ and postintervention, with no comparison to a control group (e.g., Nordby, Wang, Dahl, & Svartdal, ). Other studies have used quasi‐analytic designs with comparison groups but no random assignment to groups (e.g., Peper, Harvey, Lin, & Duvvuri, ).…”