Psychology is the scientific study of behaviour and associated biological, cognitive and social processes in humans and other animals. It is a rapidly developing field touching on all aspects of human life. Advances in neuro-imaging and molecular biology are rapidly enhancing our understanding of how the brain works, while increasingly complex theories are being developed to understand both normal and abnormal development and the behaviour of individuals and groups. Major advances are being made in understanding and treating psycho-pathologies such as anxiety, depression, eating disorders and addictions.

Psychologists have a unique mix of skills. As well as a basic knowledge about people, as individuals and in groups, they are required to have excellent writing and communication skills, the ability to analyse and understand quantitative data, and a critical and objective way of approaching problems. Psychology graduates hold research and policy analyst positions in government departments and other large public sector organisations, as well as positions of responsibility in a variety of settings, including many private sector businesses. Many graduates are employed in public relations, teaching and training, District Health Boards, the New Zealand Defence Forces, the Department of Corrections and in social service agencies such as employment services, social welfare, counselling services and health promotion. Further specialist opportunities open up for those who have completed postgraduate training in Applied Psychology, Child and Family Psychology, and Clinical Psychology (leading to professional registration as a psychologist). Clinical psychologists work with individuals and their families where there are difficulties in adjustment and coping.