Study procedure
| Tier 1 | 3 days baseline | 9 sessions PRPP intervention 45–60 min each, at 3 sessions for 3 weeks | Postintervention measurement | 4 weeks after discharge; follow-up measurement |
| Tier 2 | 5 days baseline | 9 sessions PRPP intervention 45–60 min each, at 3 sessions for 3 weeks | Postintervention measurement | 4 weeks after discharge; follow-up measurement |
| Tier 3 | 7 days baseline | 9 sessions PRPP intervention 45–60 min each, at 3 sessions for 3 weeks | Postintervention measurement | 4 weeks after discharge; follow-up measurement |
PRPP, Perceive, Recall, Plan and Perform.