OCD: Biological Explanations (Recap)

According to the biochemical explanation, people with OCD tend to have...

• High levels of serotonin

• Low levels of serotonin

• No serotonin

Some of the genes that are found to be involved in OCD are PTPRD, SLITRK3 and ____

DZ twins have higher concordance rate of OCD than MZ twins.

• False

• True

According to the biochemical explanation, people with OCD tend to have...

• High levels of dopamine

• Low levels of dopamine

The biochemical explanations involve 3 biochemicals: dopamine, serotonin and ______

According to Freud's theory, there are three personalities in every individual: