ABSTRACT
The first chapter suggested that whilst behaviour may be driven by biological factors, this can only explain some of the more basic examples of behaviour. In order to explain the range of behaviours that humans display, we must either take the reductionist approach suggested by instinct theory, i.e. that there is an instinct for each and every one of these behaviours, or we must take the view that there are other factors involved. If we take the latter view, it may be that certain forms of behaviour are encouraged because they provide us with some form of satisfaction or reward, in other words there is an incentive to engage in such behaviours.
