Diathesis-Stress Model

Shrink Definition

The diathesis-stress model explains why the same stress affects people so differently, holding that mental health problems arise when a predisposition meets enough stress. The diathesis is a vulnerability, whether genetic, biological, or from early experience, and stress is what activates it. Neither alone is usually enough, it's the combination. It underlies much of how we understand who develops what, and when.

Plain language

Mental health problems arise when a vulnerability meets enough stress.

Shrink Insight

It's often not the vulnerability or the stress alone, but the meeting of the two.

Why it matters

It explains why the same stress harms one person and not another. It also shows reducing stress can protect even a vulnerable person.

Common misunderstanding

People think either genes or circumstances alone determine mental health. Usually it's a predisposition activated by stress, working together.

Shrink Perspective

Vulnerability sets the stage, but stress often pulls the trigger.

Shrink Reflection

How does stress interact with my own sensitivities?

Shrink Step

Lower controllable stress to protect against a vulnerability you carry.

Shrink Minute

Notice how stress interacts with your own sensitivities.

Shrink Takeaway

Vulnerability and stress usually work together.

Medical boundary

Evidence summary

A well-supported framework across clinical psychology and psychiatry.