According to Maslow, higher-order needs must be met before lower needs are met

Cocaine is classified as an

A) hallucinogen B) stimulant C) depressent D) opiate

The finding that people with one type of serotonin transporter gene and childhood maltreatment had higher

rates of depression than either those without the gene or those with the gene without the maltreatment suggests that A) only one type of gene causes depression. B) both a gene and certain environmental factors need to be present to cause depression. C) childhood maltreatment causes depression. D) either a gene or certain environmental factors need to be present to cause depression.