Which chemical pathway appears to be important both in some types of psychotic behavior and in the reinforcing properties of various drugs?

For the expected frequencies in a chi-square test for independence, the proportions for any row are the same as the proportions in every other row

Indicate whether the statement is true or false

The blood-brain barrier is a __________

A) filter that keeps dangerous substances out of the brain B) mechanism for cells to stay negatively charged while at rest C) mechanism for the brain to easily exchange substances through the blood vessels in the brain D) way for the brain to get the excess oxygen it needs to the brain