The spirit of the Declaration of Independence most closely reflects the philosophy of

If a factorial study involves a significant interaction,

a. there can be no significant main effects. b. any main effects might have been obscured by the interaction. c. all main effects have to be considered together. d. the result is an ex post facto study.

Researchers have difficulty studying how race and culture affect behavior because

a. many research participants do not want to identify with specific racial or cultural groups. b. people in different groups do not show any consistent differences. c. the concepts of race and ethnicity are unclear and often defined differently by different people. d. group differences across cultures are more likely to be present than individual differences across differences.