interactionist approach:

• +

  • Combo of bio and psych treatments
  • Practical application of acknowledging bio and psych factors has been the combo of drug treatment and psychological therapies
  • Studies show that combining treatments enhances their effectiveness
  • Tarrier et al randomly allocated 315 pp to 1. medication + CBT 2. medication + counselling 3. control group (medication only)
  • pp in the two combination groups showed lower symptoms than the medication-only group though there was no difference in hospital readmission

  Clear practical advantage to adopting interactionist approach in terms of treatment outcomes
• Counterpoint:

  • Jarvis and Okami point out that saying that a successful treatment for mental disorder justifies a particular explanation is the equivalent of saying that because alcohol reduces shyness, shyness is caused by lack of alcohol
  • This logical error is called the treatment-causation fallacy.

  Therefore we cannot automatically assume that the success of combined therapies means interactionist explanations are correct.
• X

  • OG diathesis-stress model oversimplicity
  • Clear that the OG model that portrayed diathesis as a single schizogene and stress as schizophrenogenic parenting is simplistic
  • Multiple genes in multiple combinations influence diathesis
  • Stress comes in many forms including but not limited to dysfunctional parenting
  • Diathesis can be influenced by psych factors and stress can be bio + psych
  • Houston et al showed childhood sexual abuse emerged as the major influence on underlying vulnerability and cannabis as a major trigger

  Multiple factor affects diathesis + stress supporting modern underst