A researcher develops a self-report questionnaire assessing "morningness." High scores indicate the tendency toward being a lark, or morning person, whereas low scores indicate the tendency toward being a night owl. Based on the textbook's discussion, the researcher should find a correlation between scores on this measure and scores on a measure of the Big Five trait of openness, and a correlation between scores on this measure and scores on a measure of the Big Five trait of conscientiousness.

Negative, Opposite

Explanation:

Based on the textbook's discussion, the researcher should find a negative correlation between scores on this measure and scores on a measure of the Big Five trait of openness, meaning that they are not correlated, and a positive correlation between scores on this measure and scores on a measure of the Big Five trait of conscientiousness, meaning that they have some correlation.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."