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

Regular exercise can allow older adults to double, or even triple, their strength

Indicate whether the statement is true or false

What evidence suggests a hereditary basis for extraversion? a. Twins resemble each other in extraversion more closely than brother and sister do. b. Monozygotic twins are more similar in extraversion than dizygotic twins are

c. Dizygotic twins are more similar in extraversion than monozygotic twins are. d. Adopted children resemble their adopting parents in extraversion.