Which of the following substances is most unlike the others in terms of their psychological effects?
a. LSD
b. cannabinoids
c. mescaline
d. psilocybin
Question 2
When the hallucinogens phencyclidine (PCP) and LSD are compared, it is generally the case that PCP is more likely to
a. induce anesthesia
b. elicit symptoms indistinguishable from schizophrenia
c. be self-administered by nonhumans
d. all of the above