11.   The book contains a great many profound insights into human behaviour.

12.   The positivist approach to human behaviour applies a similar logic.

13.   This discussion illustrates the limitations of a static model of human behaviour in social research.

14.   This is true of human behaviour of all kinds, and of human emotions.

15.   Cruelty is a normal attribute of human behaviour.

16.   ...human sexual behaviour.

17.   His fascination with the subtleties of human behaviour makes him a good storyteller.