English to Spanish Social Sciences Psychology

No sé como traducir "highand low "diet" groups on behavioural measures on later stages" en el siguiente contexto:

2. Field studies where different groups for one reason or another are brought together, get different "diets" of violent and aggressive TV-programmes (...)
4. Long-term panel studies where children of different viewing habits are studies in a long-term perspective. In genuine panel studies one uses the same population over a period of years. One may also do childhood studies of TV-habits related to the topic of violence and compare these with the high and low "diet" groups on behavioural measures at later stages e.g. as youngsters or young adults. In so-called simulated panel studies, subjects are questioned retrospectively about childhood viewing habits and these scores are studied in comparison with behavioural measures.