The stress-coping (mis)match hypothesis for nature × nurture interactions

Area of Science:

• Psychology
• Neuroscience
• Genetics

Background:

• Stress-related disorders like depression result from complex nature-nurture interactions.
• Current research often assumes genotypic stress-sensitivity and exposure inevitably cause maladaptive coping and disorders.
• However, stress-coping responses can also be adaptive.

Purpose of the Study:

• To elaborate the 'environment' mismatch hypothesis into the stress-coping (mis)match (SCM) hypothesis.
• To explain how nature x age-dependent nurture interactions program stress-coping responses.
• To discuss the adaptive or maladaptive nature of these responses based on environmental conditions.

Main Methods:

• Elaboration of the 'environment' mismatch hypothesis.
• Application of the SCM hypothesis to explain stress-coping (mis)matches.
• Discussion of the serotonin transporter promoter polymorphism as a model for nature x nurture interactions.

Main Results:

• Stress-coping responses are adaptive when they match current environmental stress conditions.
• These responses become maladaptive when they mismatch current stress conditions, potentially leading to agitation.
• The SCM hypothesis provides a framework for understanding these dynamics.

Conclusions:

• The SCM hypothesis offers a new perspective on stress-related disorders, moving beyond simple gene-environment interaction models.
• Understanding the match or mismatch between programmed coping and current stress is crucial.
• The hypothesis has implications for the prefrontal-amygdala circuit and therapeutic interventions for stress-related disorders.