Esther Mertens

30 | Chapter 2 Figure 1 . Flow chart. Figure 1. Flow chart Follow-up measurement Follow-up measurement Follow-up measurement Follow-up measurement Post measurement Post measurement Post measurement Post measurement R&W intervention Year 2 N = 720 (4 x 180) Observation communication ( n = 60) Observation communication ( n = 60) Pre measurement Pre measurement Pre measurement Pre measurement Interim measurement Post measurement Post measurement Post measurement Post measurement R&W intervention Year 1 N = 720 (4 x 180) Observation communication ( n = 60) Pre measurement Pre measurement Pre measurement Pre measurement Interim measurement Intervention group 1 “R&W Light” n = 180 students Intervention group 2 "R&W standard" n = 180 students Intervention group 3 “R&W Plus” n = 180 students Control group n = 180 students Schools randomly assigned to one of four conditions Observation communication ( n = 60) Interim measurement Interim measurement Interim measurement Interim measurement Interim measurement Interim measurement