You're Conducting a Study to Determine Whether Children Can Learn

question 78

Multiple Choice

You're conducting a study to determine whether children can learn to use a new type of educational software on a touch-screen tablet computer. You try the software in a group of 10-year olds and a group of 8-year olds, and are surprised to find that the younger children perform better with the new software. You then find out that the younger group had been exposed to touch-screen tablets in the first grade, but the technology wasn't available when the older group had been in first grade. Which of the following effects has had an impact on your research results?

• A)cohort effect
• B)placebo effect
• C)cross-sectional effect
• D)artifact effect

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Definitions:

Tunica Media

The middle layer of the wall of a blood vessel consisting mainly of smooth muscle cells and elastic fibers, responsible for regulating the diameter of the vessel.

Lumen

The inside space of a tubular structure, such as a blood vessel or intestine.

Carotid Sinus

A dilated area at the base of the internal carotid artery that contains receptors to help regulate blood pressure.

Baroreceptors

Pressure-sensitive sensory neurons located mainly in the carotid sinus and aortic arch, which help regulate blood pressure.