A Researcher Knows That There Is a Relationship Between Obesity

question 31

True/False

A researcher knows that there is a relationship between obesity and watching television for young children. However, it is not known whether children watch more TV because they are overweight, or whether they are overweight because they watch so much TV. This is an example of the third-variable problem.

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Definitions:

Buccinator

A muscle of the cheek that helps in mastication by pushing food onto the molars and is also involved in facial expression.

Masseter

A facial muscle that plays a major role in the chewing of solid foods, one of the strongest muscles in the human body.

Semitendinosus

A muscle in the back of the thigh, part of the hamstring group.

Gastrocnemius

A large muscle located on the back portion of the lower leg, forming part of the calf, that aids in walking, running, and jumping.