Quasiexperimental crossover design for intervention
| Group | Sequence of observations and treatments | ||||
|---|---|---|---|---|---|
| O1 = first observation on dependent variables, O2 = second observation on dependent variables, O3 = on-site (follow up) observation. | |||||
| Xn = narrative simulation, Xp = physical simulation. | |||||
| A (n = 7 schools) | O1 | Xn | Xp | O2 | O3 |
| B (n = 7 schools) | O1 | Xp | Xn | O2 | O3 |
| C (n = 7 schools) | O1 | O2 | |||