OCD - Characteristics and Biological Explanations

Which of the following in not an emotional characteristic of OCD?

• Anxiety

• Lowered mood

• Guilt

• Compulsion

For a diagnosis to be made, obsessions and/or compulsions must be present on most days for at least how many weeks?

• Two weeks

• Three weeks

• Four weeks

• Five weeks

Obsessions are r________ and intrusive thoughts that are perceived as inappropriate.

Draw the cycle of OCD

Which of these is a true statement concerning OCD?

• OCD does not run in families

• OCD involves just one gene

• OCD is caused by a combination of different genes

• OCD is caused by just by one neurotransmitter

Which of these would not suggest a genetic basis for OCD for a person?

• OCD runs in their family

• They have an identical twin with OCD

• A brain scan shows the caudate nucleus is damaged

• They have had a recent trauma

The diathesis s_____ model suggests that genes only create a vulnerability for OCD and other factors affect whether the condition develops or not.

Which two are relevant criticisms of the biological explanation of OCD?

• Other known causes of OCD, such as trauma, are ignored

• Most of the research is correlational

• There are many studies which show anatomical differences in those with OCD

• Concordance rates for OCD are higher in MZs than DZs