Why can't one approach to psychology describe all human behaviour?

Why can't one approach in psychology explain all human behaviour? The aim of this essay is to define why one approach to psychology cannot explain the whole concept of all human behaviour. Five theorists have been chosen, each one has a differing view to psychology. This is to give a varied insight into the different approaches used to define all human behaviour. There are many different approaches within psychology, and all use individual methods to …

…had an effect on our behaviour. In conclusion, one approach can't explain all behaviour, as there are gaps and criticism to each approach however maybe a combination of all the approaches may help us to begin to understand things although there will never be a definite absolute explanation of human behaviour. The differing theories just give us an overview of what might explain how each approach in its own way has positive and negative factors.