See our personality as containing active forces that cause us to act as we do. These forces are powerful urges, feelings and conflicts within the unconscious mind
The first and most important psychodynamic theory, originally founded by Sigmund Freud. Our early childhood experiences determine our personality and future behaviour
Tries to balance the conflicting demands of the id and the superego. Driven by the reality principle and seeks to control the id's urges while still finding ways to satisfy them
Link between maternal deprivation and deviant or anti-social behaviour. A child needs a close, continuous relationship with its primary carer from birth to age 5 to develop normally
Bowlby found that 39% of 44 juvenile thieves had suffered maternal deprivation before age 5, compared with only 5% of a control group of non-delinquents
Criminality is the result of a particular personality type, made up of two dimensions: extraversion vs introversion, and neuroticism vs emotional stability
Individuals learn criminal behaviour largely in the family and peer groups, through imitation of criminal acts and learning of attitudes favourable to crime
Behaviour is shaped by reinforcements and punishments. Behaviour that results in a rewarding outcome is more likely to be repeated, while behaviour that is punished is less likely to be repeated
We learn much of our behaviour, including aggressive behaviour, by imitating other people ('models'). Whether we imitate the behaviour depends on the consequences observed for the model
Mental processes such as thinking, beliefs, and decision-making shape our behaviour. Criminals are prone to faulty thinking and biases that lead them to commit crime
Criminals show a range of errors and biases in their thinking and decision-making, including lying, need for power, lack of empathy, and blaming others
Our ideas of right and wrong develop through a series of levels and stages from childhood to adulthood. Criminals' moral development is stuck at a less mature level, focused on rewards and punishments rather than moral principles
Cognitive behavioural therapy is a range of treatments for offenders based on cognitive theories that see delinquents' thought patterns as different from those of normal people