Methods: Data for the present study come from the efficacy trial of a self-directed handbook for parents of first-year college students. In the summer before college, parent-student dyads were randomly assigned to one of three conditions: control (N=313), parent handbook (N=278), or parent handbook+ (N=323). Parents in the handbook plus condition also received periodic booster text/email messages to remind them of handbook content that may be useful throughout the student’s first semester. We collected data on parent-student communication, bonding, autonomy support, and warmth as well as implementation data on dosage, adherence, and responsiveness to the intervention.
Dose: 85% of parents reported they read the handbook and/or completed at least some of the activities. 62% competed at least three quarters and 47% completed all 22 activities.
Adherence: On average, parents spent one hour engaged with the program. Approximately 75% reported spending one hour or more reading the handbook, and 68% reported spending one hour or more doing the suggested activities with their student.
Responsiveness: 88% of parents reported that the handbook was at least somewhat useful to their student, and 43% reported that it was very or extremely helpful. About half reported that their students were very or extremely engaged.
Conclusions: Most parents found the intervention useful and engaging, but full dosage was low. Future analyses will illuminate underage students’ use of marijuana and the relation of parent-student relationship quality with student use. In addition, we will examine whether intervention condition, dosage, and implementation characteristics are linked to student marijuana use.