---
title: "Diathesis-Stress Model — AP Psychology Definition & Exam Guide"
description: "The diathesis-stress model says psychological disorders come from a genetic vulnerability plus environmental stress. Learn how it shows up across Unit 8."
canonical: "https://fiveable.me/ap-psych-revised/key-terms/diathesis-stress-model"
type: "key-term"
subject: "AP Psychology"
---

# Diathesis-Stress Model — AP Psychology Definition & Exam Guide

## Definition

The diathesis-stress model suggests that the development of psychological disorders is influenced by both a genetic predisposition (diathesis) and environmental stressors. It proposes that individuals with a genetic vulnerability are more likely to develop a disorder when exposed to stressful life events.

## Review

### Related Terms

- Vulnerability: A person's susceptibility or tendency to develop certain conditions or disorders.
- [Stressors](/ap-psych-revised/key-terms/stressors): External events or situations that cause physical or psychological strain.
- Protective Factors: Factors that reduce an individual's vulnerability to developing psychological disorders in response to stressors.