Researchers Set Up a Study to Determine Whether Large Doses

question 11

Multiple Choice

Researchers set up a study to determine whether large doses of a nutritional supplement would shorten the length of time it takes to recover from a cold. Three thousand volunteers were split into two groups. For two weeks, members of group A took 3,000 mg of the supplement daily. Group B received 3,000 mg of a placebo (sugar pill) . At the end of the two-week period, the researchers inserted live cold viruses directly into the noses of all the volunteers. The volunteers in both group A and group B continued to take their daily pills. All the volunteers got colds, and there was no significant difference in the length of time the colds lasted.
-Which was the experimental group?

• A) group A only
• B) group B only
• C) all 3,000 volunteers

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Definitions:

Cultural Background

The environment, traditions, practices, and beliefs that influence an individual's worldview and behaviour, shaped by the culture in which they were raised.

Visual Recognition Memory

The ability to recognize previously encountered visual stimuli.

Perceptual Constancies

Perceptual constancies refer to the brain's ability to perceive objects as unchanged despite shifts in sensory input, such as changes in lighting, angle, or distance.

Scaffolding

An educational method that provides support and guidance to learners by building on their existing knowledge and skills to reach higher levels of understanding.