Sternberg's triangular theory of love includes three components: intimacy, passion, and _______________

Only middle-class families provide financial assistance to their emerging-adult children

Indicate whether this statement is true or false.

Hannah decides to test whether engineering majors have greater visual-spatial abilities than students with other majors. Hannah decides to define visual-spatial ability in terms of how long it takes each participant to complete a jigsaw puzzle. This is an

a. operational definition b. theoretical definition c. corollary d. hypothesis