Genetic and Environmental Influences on Mood Disorders

Very Hard Unit 8: Clinical Psychology Mood Disorders

In understanding mood disorders, the persistence and intensity of symptoms play a crucial role in diagnosis and treatment. Among various factors influencing mood disorders, family influence and genetic predispositions are particularly significant. One study reported that individuals with a family history of mood disorders have a higher susceptibility to developing similar conditions themselves. Additionally, brain chemistry and hormone fluctuations also contribute to the onset and severity of these disorders. Considering various theories and recent findings, which of the following statements regarding the influence of genetics on mood disorders is most accurate?

Genetic factors play a minimal role in the development of mood disorders, as environmental factors are more influential.

There is evidence to suggest that mood disorders are entirely heritable with no environmental influence.

Genetic predispositions can increase susceptibility to mood disorders, but environmental factors also significantly impact their onset.

Mood disorders are exclusively determined by neurobiological factors, rendering genetic predispositions irrelevant.

The influence of genetics on mood disorders is inconsistent and varies greatly between individuals with no defined patterns.

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