What hallucinogen, at high doses, can induce psychotic behavior, including delusional thinking, catatonic behavior, manic excitement, and sudden mood changes?

One approach to distinguishing Alzheimer's disease from other forms of senile dementia involves __________

a) tracking patients' circadian variables, such as body temperature. b) obtaining self-reports of sleep and memory problems. c) performing CT scans of patients' brains. d) watching for signs of sundowning and other symptoms.

In I'm OK, You're Not, the article which examines the role of prejudice, a dependent variable was

(a) participant's personality ratings of a job candidate (b) the differences in colleges attended by participants (c) the age of Greg, the gay man in the scenario presented (d) the instructions given to participants about the IQ test