A City Guide To Chenzhou for While our understanding of health behaviour remains incomplete due to the complexity of influences upon human behaviour generally, the empirical studies described have identified many significant and modifiable influences upon health and health behaviour that offer potential targets for future health promotion and health education. mediate/mediator some variables may mediate the effects of others upon an outcome for example, individual beliefs may mediate the effects of gender upon behaviour; thus gender effects would be said to be indirect, rather than direct, and beliefs would be mediator variables. behaviour change during these years, with more credence being given to the attitudes, beliefs, values and behaviour of one’s peers than to the advice or attitudes of parents or teachers e.g. Chassin et al. Hendry and Kloep . While establishing a sense of identity among one’s peer group, it is perhaps not surprising that, for some adolescents, this will include the initiation of risk’ behaviour as part of rebelling against authority or because the behaviour is considered to be cool’ or sophisticated and grown-up Camp et al. A City Guide To Chenzhou 2016.