interactionsit explan of sz

• diathesis stress model - combines biological and psychological factors - interactionist approach
• biologically vulnerable and an environemntal stressor leads to the development of sz
• bio vulnerability - genes - biochemical
• evironmental stressor - family - money worries
• meehl - schizogene
• rees et al - identifies at least 15 genes that could cause sz
• read - proposed model that early trauma alters the brain and developing hpa pathway leading to sz development
• stressor can be environmental or psychological
• tienari - investigated effect of bio and environmental - evidence suggested that both genetic and environmental led to the highest levels of sz
• tienari pro = control group - large sample
• tienari con - subject atrition
• houston - early childhood sexual assault causes a vulnerability - paired with cannabis use can trigger sz
• houson pro - recent - control group
• houston con - less generalisable - sexual assault is less generalisable
• tarrier - support for interactionist methods - more effective
• pro - holistic approach
• pro - effectivness of drug therapies