- Theories and theory development on psycho-social determinants of health behaviour, in particular: attitudes, social influences and self-efficacy of behaviour.
- Changing health behaviour and related attitudes, (perceptions of) social influences, self-efficacy.
- Planning models for health promotion and health psychology.
- Cancer prevention and prevention of cardiovascular diseases: smoking prevention and cessation, exercise, nutrition, alcohol, screening and early detection.
- School health promotion; work site health promotion;
- Computerized tailoring; health counselling;
- Target group segmentation for schools, work sites, mass-media approaches, health intermediaries, cancer patients;
- Development, evaluation and diffusion of interventions (e.g. video-peer-led programs, school programmes, work site programmes, self-help manuals, computer tailoring).