A research team examines concordance rates for a mood disorder across 800 monozygotic and 800 dizygotic twin pairs raised together. They report concordance of 0.55 for monozygotic pairs and 0.22 for dizygotic pairs. The investigators apply behavioral genetic models to estimate heritability while acknowledging shared environment as a covariate.
Which model best integrates these genetic findings with environmental contributions to disorder onset?
- A
Strict behaviorist model
- Bcheck_circle
Diathesis-stress model
- C
Humanistic self-actualization model
- D
Pure trait theory
Explanation
The diathesis-stress model proposes that a genetic vulnerability (diathesis) interacts with environmental stressors to produce disorder onset.