brengden twin study

• conducted a twin study to see whether social and physical was down to nature (Inherited) or down to nurture ( the environment)
• they recruited 234 twins from the Quebec newborn twin study, where they were all 6 years old
• they gathered peer rating from teachers which carried out a 3 point scale and their peers who were given a booklet and asked to answer the statement that best described each peer, on both physical and social aggression
• when the rating from both the peers and the teachers were collected, they concluded that physical aggression was down to genetics whereas social aggression was result of their environment
• strength to this study is the application, knowing that social aggression is a cause of environmental factors, then there can be preventive measures put in place so that children can avoid these types of situations for example avoiding situations which involve swearing
• the weakness of the study is the generalisability, as the study only contained 234 twins, this is a limited sample size and therefore is not fully representative to the wider population and due to this, the applications become limited as well
• the study is also considered not to be ethical because it involves peers rating each other which could cause conflict as it may upset some of the peers and therefore f=could potentially damage peer relationships