ZEPPELIN (Zurich Equity Prevention Project with Parents Participation and Integration) is a
longitudinal, randomized controlled intervention study. The main objective is to examine the
effectiveness of the early intervention program "Parents As Teachers" (PAT) in psychosocially
disadvantaged families. This includes four aims:
1. Identification of children at risk at an early age, using an interdisciplinary network;
2. Investigation of the acceptability of the program by the parents;
3. Evaluation of the intervention process and efficacy during and immediately after program
4. Evaluation of the efficacy in terms of child academic performance.