Although they may seek increased self-confidence, greater energy, and euphoria, heavy users of this stimulant drug may experience hallucinations and paranoid delusions. What is it?

In Eysenck's view, what was problematic in the personality inventories that preceded criterion analysis?

a) They began with a hypothesis about a possible underlying variable. b) They were scored by comparing the participant's answers with those of pretested groups. c) They were scored by trying to interpret the answers to each question. d) Their scores were regarded objectively as just marks on paper.

Stanley Schachter and Robert Zajonc worked together to postulate the two-factor theory of emotion

Indicate whether this statement is true or false.