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Flashcards in Interactionist Approach Deck (11):

What is the interactionist approach?

A broad approach explaining schizophrenia, which acknowledges that a range of factors, including biological and psychology factors are involved in the development.


Meehl's model (1962):

Vulnerability to schizophrenia is entirely genetic - there's a single schizogene.

Led to development of biologically based schizotypic personality.

If a person doesn't have the schizogene, no amount of stress would lead to the disorder.


What is the modern understanding of the distressing stress model?

Clear that many genes increase vulnerability slightly.

There are a range of factors beyond genetic, including psychological trauma.

Trauma becomes the diathesis feather than the stressor.


Read et al. (2001):

Proposed a neurodevelopmental model in which early trauma alters the developing brain.
Early and severe trauma such a child abuse can seriously affect brain development.


Houston et al.

Modern definition of stress includes anything that risks triggering schizophrenia.


The relation between cannabis and schizophrenia

Cannabis is a stressor that increases the risk of schizophrenia by up to 7x according to the dose.
Cannabis interferes with the dopamine system.


Turkington et al. (2006):

Can believe in biological causes but still practise CBT to relieve psychological symptoms, requires and interactionist approach


Treatment according to the interactionist model

Combining antipsychotic drugs and psychological therapies such as CBT.


Tienari et al. (2004):

Children from 19,000 Finnish mothers with schizophrenia followed up - adoptive parents assessed for child-rearing style and rates of schizophrenia were compared to a control group.

Rearing style of high levels of criticism and conflict and low levels of empathy involved in the development.


Tarrier et al. (2004):

315 patients randomly allocated to a medication and CBT group, medication and supportive counselling or a control group of just medication.
-patients in combination groups showed lower symptom levels
- no difference in rates of hospital readmission


A03 points for the interactionist approach

- Tienari - genetic vulnerability and environment both important
- diathesis stress model reductionist
- Tarrier - supporting usefulness of approach