The Following Scatterplot Represents the Results of a Study Undertaken

question 12

Multiple Choice

The following scatterplot represents the results of a study undertaken by Chakrabarty et al. (2005) who were investigating glutamate levels in psychotropic drug-naive OCD patients and comparing them with psychiatrically normal controls. Findings were reported as follows for CSF glutamate levels in OCD patients compared to controls: F(1,29) =11.153, p = 0.002. How would these findings be interpreted? Scatterplot showing CSF glutamate levels in patients (1) and controls (2) .

• A) CSF glutamate levels are not significantly raised in OCD patients compared to normal controls.
• B) CSF glutamate levels are significantly raised in OCD patients compared to normal controls.
• C) CSF glutamate levels are unchanged in OCD patients compared to normal controls.
• D) None of the above.

---

Definitions:

Deadweight Loss

A loss of economic efficiency that can occur when the equilibrium for a good or a service is not achieved or is not achievable.

Consumer Surplus

The difference between the total amount that consumers are willing to pay for a good or service and the total amount they actually do pay.

Consumer Surplus

The difference between what consumers are willing to pay for a good or service and what they actually pay, indicating the economic benefit to consumers.

Equilibrium Price

The price at which the quantity of a good or service demanded by consumers equals the quantity supplied by producers.