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level: What makes a criminal?

Questions and Answers List

level questions: What makes a criminal?

QuestionAnswer
Physiological explanations for criminal behaviourbrain dysfunction - limbic system (amygdala, hippocampus and thalamus responsible for emotional response , damage to the system leads to abnormal responses how do you investigate brain activity- Position Emission Tomography PET and FMRI genes- the warrior gene is associated with violent behaviour by a mutation hormones- cortisol leads to anti social behaviour and testosterone leads to aggressive behaviour low resting heart rate 5-17% of gender difference in crime
non physiological explanations for criminal behaviourFamilies- Farrington found that people from disrupted families are often associated into crime e.g. poverty ,school performance Norms- Sutherlands explanation - lacks temporal validity. criminal behaviour is learnt from others , your environment Moral development - a lack of moral reasoning leads to crime Criminal thinking patterns
Key research by RaineQuasi experiment (Iv- murderers or non murderers) is naturally occuring . DV= activity in regions of the brain PET scans Sample - 41 matched on age and sex . so matched pair design mean age 34.3 control group - no mental illnesses Results - murderers had reduced glucose metabolism in the prefrontextal cortex , left angular gyrus,corpus callosum and reduced activity in the amygdala, hippocampus and thalamus. Conclusion - Raine did not conclude that there were only biological causes for violence just that there might be a predisposition to violence in some people depending on environment triggers
Evaluation of key researchValidity - matched pair design increases the validity as it removes pptts variables -pet scans are objective - low pop validity -41 Reliabilty - standardised same questions and scan - subjective interpretation on activity CAN SUPPORT PSCYH AS A SCIENCE
Applications of biological stratergies to prevent behaviournutritional suplements - omega 3 and 6 reduce anti social bhv quit smoking , birth check ups , no caffiene