1.1 The behaviour that intends to inflict some form of harm on others. Aggression can be verbal or
2 Biological explanation
188.8.131.52 Men have much more testosterone than women and are more aggressive
184.108.40.206 There is a high proportion of men with XYY syndrome in amongst violent offenders, potentially
making them more aggressive.
2.3 Brain: interaction/abnormalities
2.3.1 Prefrontal cortex
220.127.116.11 knows when instinctive behaviour is appropriate, controls and stops aggression
2.3.2 Limbic system
18.104.22.168 associated with instinctive behaviour e.g. aggression.
2.4 Young study
2.4.1 A:To see what effect hormones have on aggressive behaviour.
2.4.2 M: Young injected pregnant rhesus monkeys with testosterone and observed the levels of
aggression in their offspring as they matured.
2.4.3 R; The high levels of testosterone made the females grow up to behave like male
monkeys – engaging in rough-and-tumble play and challenged the males for dominance in their
2.4.4 C: Testosterone does seem to play a vital part in aggressive behaviour.
2.4.5 E: Results are not generalisable as the behaviour of monkies may not reflect the
complex bevaviour of humans. There are ethical issues with this study as the
unnatural increase of testosterone may have caused distress and physiological
harm (e.g. through challanging males for dominance. However this study does
support that testosterone does play a vital role in aggression