A Researcher Is Testing the Effectiveness of a New Math

question 346

Multiple Choice

A researcher is testing the effectiveness of a new math program. The extraneous variables, such as temperature and lighting, will best be controlled by

• A)randomly assigning students to rooms of varying temperature and light intensity.
• B)randomly selecting the rooms in which the students will be taught.
• C)making the temperature and the amount of light the same for all the rooms.
• D)letting the students select the room temperature and lighting in which they are most comfortable.

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Definitions:

Cephalocaudal Development

A pattern of growth in humans where development proceeds from the head downward through the body and towards the feet.

Heredity

The biological process through which traits and characteristics are passed down from parents to offspring.

Culture

The shared attitudes, values, norms, practices, languages, and material objects of a society that are passed from one generation to the next.

Cephalocaudal Development

A pattern of growth where infants develop motor skills from their head down through the body to the feet.