Short answer questions

• Evolution Stud: Daly + Wilson

  Found that unmarried men were mope likely to commit murder than older married men
• Hormones study: Beeman found that mice which were castigated were less aggressive and when injected with testosterone showed increased levels of aggression 
• Strength of Freud

  • Little Hans 

  Freud little Hans observations displayed how Hans anger towards is father was displaced onto horses therefore developing a phobia of horses. Freud explained that little Hans had to resolve his inner turmoil of desiring his mother and wanting to hurt his father because of this. 
• Weakness of Freud

  • little Hans

  However Freuds research is not scientific as it was based on corresponding letters between little Hans’s father and Freud. It was also through Freuds interpretations of the letters and the little Hans example is biased towards that theory which puts into question the validity of Freuds research 
• Weakness of hormones

  • Chester et al 2015

  Found that low functions MAOA genotype in 277 female and male particepents was linked to greater aggression so it may be that there is also a gene for aggression
• Strength of hormones

  • dabs (1995)

  Found higher levels of testosterone in adult male prison inmates who has committed violent c rimes compared to property crime so hormones may explained aggressive behaviour
• Weakness of evolution

  • Daly and Wilson

  A weakness with this research is that there is no evidence that suggests that evolutionary aggression in the cause of this finding on limited resources and aggression
• Weakness of brain structure

  • Chester et al 2015

  Found that low functions MAOA genotype in 277 female and male particepents was linked to greater aggression so it may be that there is also a gene for aggression
• Strength of brain of structure 

  • Raine et al

  Investigated brains of 41 people who had been convinced of murders and were pleading to guilty due to reson of insanity. Each particepents an a pet and scan and Rain found that the murders had reduce glucose metabolism in the prefrontal cortex. The prefrontal cortex is associated with rational thinking band impulse control meningitis that reduce activity in this part of the brain could be associated with increased aggressive activity
• Weakness of brain structure

  • Raine et al

  Raines stud has criticisms due to the use of the PET scanning technique which is known to been accurate due to the difficulty of being able to precisely interpret the location of activity this reduces the internal validity of the study as it decreases the accuracy of the results being certain that lover levels of brain activity was actually located in the prefrontal cortex