A Researcher Is Interested in Studying Changes in Marital Satisfaction

question 57

Multiple Choice

A researcher is interested in studying changes in marital satisfaction over the course of marriage. She hypothesizes that marital satisfaction is highest when couples are newly married, that it decreases during the middle years of marriage, but rises again during later years of marriage. In order to test her hypothesis, she recruits fifty married couples within each of the following conditions: (1) married less than 10 years; (2) married 15-20 years; (3) married more than 25 years. All 150 couples (50 from each condition) complete a standardized measure of marital satisfaction.
If there is a significant change with length of marriage, the researcher would find

• A) a large value of the test statistic.
• B) a small value of the test statistic.
• C) either very large or very small values.
• D) There is no way to know the size of the test statistic.

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Definitions:

Pneumatophore

Roots that extend up out of the water in swampy areas and are thought to provide aeration between the atmosphere and submerged roots.

Storage Root

A root modified for the storage of nutrients and energy, typically in the form of carbohydrates, as seen in carrots and beets.

Photosynthetic Root

Roots capable of photosynthesis, typically found in some aquatic plants, allowing them to absorb carbon dioxide directly from their environment.

Arbuscule

A specialized tree-like structure formed within the cells of plant roots by certain types of fungi in a symbiotic mycorrhizal relationship.