Which of the Following Studies Used a Single-Factor, Repeated-Measures Design

question 44

Multiple Choice

Which of the following studies used a single-factor, repeated-measures design?

• A)Kroeger et al.'s study, which evaluated the effects of a social skills program for autism
• B)the study by Kasser and Sheldon, which compared groups writing two kinds of essays
• C)Lee and Aronson's study comparing the effects of having a room move forward or backward
• D)the study by McDonald and Flanagan, which examined the effects of traumatic brain injury

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Definitions:

Heterocysts

Specialized nitrogen-fixing cells found in some filamentous cyanobacteria, providing an anaerobic environment necessary for the fixation of atmospheric nitrogen.

Nitrogen Cycle

A biochemical cycle that involves the conversion of nitrogen into multiple chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems.

Nitrification

A microbial process in the nitrogen cycle where ammonia is converted into nitrite and then into nitrate.

Atmosphere

The layer of gases surrounding a planet, essential for life on Earth, providing air to breathe and protecting from harmful solar radiation.