Registered Practical Nurse (RPN) Practice Test

What role do environmental influences play in the risk of psychiatric disorders?

1. They are unimportant to genetic factors

2. They only worsen symptoms without affecting genetic predisposition

3. They can mediate or worsen genetic risks

4. They are solely responsible for the disorders

The correct answer is: They can mediate or worsen genetic risks

Environmental influences play a significant role in the risk of psychiatric disorders by interacting with genetic predispositions. These influences can mediate, meaning they can modify the way genetic factors express themselves, or they can exacerbate existing genetic vulnerabilities, leading to a higher likelihood of developing a psychiatric condition. For example, a person with a genetic predisposition to anxiety may not develop symptoms without the presence of certain environmental stressors, such as trauma or chronic stress. Conversely, someone without a genetic predisposition might still develop anxiety if they experience significant environmental challenges. This interaction highlights the importance of considering both genetic and environmental factors when evaluating the risk and management of psychiatric disorders. Understanding this relationship can help inform treatment approaches that address both the biological and environmental aspects of mental health.