In the United States, the average age of menarche has ________ since the mid-nineteenth century.

A. declined significantly
B. not changed
C. increased marginally
D. increased significantly


Answer: A

Psychology

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Kiera is interested is assessing the degree of relationship between whether or not students belong to a fraternity or sorority and the number of hours they spend volunteering each week. Kiera should use the _____ correlation coefficient to assess this relationship

a. partial b. point-biserial c. phi d. Pearson product-moment

Psychology

A scientist has the responsibility to ______ the findings or ideas discovered in a research study.

A. convolute B. complicate C. make sense of D. explain using technical jargon

Psychology

The first edition of the DSM was published in _____.

A) 1896 B) 1926 C) 1952 D) 1980

Psychology

A(n) ______ is a brief written summary of the purpose, methods, and results of an article, chapter, book, or other published document.

A. full-text article B. database C. research study D. abstract

Psychology