Psychology bridging task: Person one: John Late night drinking. Got into argument resulting in him throwing his drink. Large scale barfight broke out, Realised that he left his friend in the bar after fighting his way out. Went back to see that his friend had his face smashed with a broken beer glass, saw the eye hanging out of its socket, With rest of friends took 2 handguns and 2 shotguns. When bouncer opened door he pressed one of the guns to the bouncers chest ordering him back inside. The bouncer refused to do this so as the gun was pointed at the bouncers chest that resulted in the bouncer being shot in the chest. Biological factor is a problem with the amygdala the section of the temporal cortex that is in charge of emotions and the fight or flight reflex This problem being a small area of tissue from the amygdala being shrunken affecting the brains ability to control the fight or flight reflex and emotional regulation. This factor of a shrunken amygdala causes a reduction in the person ability to experience fear, this could be the reason as to John being seemingly fearless as he held the gun to the bouncers chest. Paul: Possibility of hormones as biological factors, Aggressive behaviour dated from the age of twelve, Theory of hormones being true as Paul has over 2.5x the average levels of testosterone when compared to the control group of the average male testosterone levels, Paul regrets his previous actions, During the pregnancy with Paul his mother was a raging alcoholic, This was proved to be true as other family members saw that his mother was drinking so much while pregnant that they were quote “surprised he wasn’t born with a bottle of vodka”, Alcohol affects the brain of a foetus as a form of neurotoxin, This can actually damage brain cells causing possible disability or emotional issues, Suffered from a significant degree of prenatal testosterone exposure which can lead to significantly violent behavioural outbursts, Anthony: Abnormal brain development which caused the hippocampus to be smaller in volume, This affects his ability to learn and remember things, This also made it highly likely that Anthony had ADHD as a child, This possible ADHD could have caused challenging and ruling behaviour in school, This then mixed with multiple negative experience within Anthony’s home environment, At age of 10 suffered from incidents of sexual abuse, This is believed to have blunted how Anthony’s body reacts to stress and fear, As he lacked the stress response, he would have gotten into more trouble that would have been stressful for the average person, These factors could have reacted with Anthony’s surge in hormones during puberty influencing aggressive behaviour, Almost 3x the average post puberty male testosterone levels, Excessively high levels of testosterone then leading to issues like an overwhelming sense of dominance and potential aggression, Upon being excluded from school became completely immersed in criminal behaviour, During this time of his criminal life Anthony suffered from several head injuries, These head injuries further increasing his risk of committing violence, Was involved with carefree weaponised drug deals in which violence was the only means of resolving issues, The night of the murder was impulsive, he didn’t originally intend to kill but instead get the money he was owed by the person he killed, Had a cognitive disorder reducing his ability to make good decisions as well as planning his actions, This then linked in with his ADHD, This then meant that taking the gun was not a very good decision, The high testosterone levels driving aggression to peak levels, Was ready to use a weapon as a means of getting the money back, Had a low fear response, Only intended to push the victim back by forcing the barrel to his chest but this ended with the victim trying to fight back and Anthony then in the heat of the moment pulled the trigger therefore killing the man. Similarities: Paul and Anthony both had highly excessive testosterone levels, this causing increased aggressive behaviour and actions of dominance. All three had biological issues with brain function reducing ability to respond to fear and stress. John and Anthony both killed due to a fight. John and Paul were affected by alcohol, despite this similarity, John had been drunk from the earlier barfight whereas Paul’s mother caused damage to his neurotransmitters as during pregnancy was a raging alcoholic. Conclusion: To conclude the research i have previously recorded about each of the three people in this document, the three major factors of the psychological behaviours of these three murderers includes the environmental factors of alcohol and abuse in the home setting, the biological factors being either extreme hormonal abnormalities as seen in both Paul and Anthony or an abnormality in the brain affecting the persons response to fear and stress. these factors were the main ones as it was stated that it was very common for people who had committed murder in the past to have these abnormalities that affect psychological tendencies.