It Was Discovered That a Larger Proportion of Children Who

question 39

Multiple Choice

It was discovered that a larger proportion of children who slept with nightlights later developed nearsightedness, compared to children who did not sleep with nightlights.The headlines read, "Leaving a light on for you children causes nearsightedness!" Later it was pointed out that nearsighted people have more trouble seeing in the dark and are more likely to leave lights on at night for their kids.And those same nearsighted parents are likely to have nearsighted kids.This is an example of ________________________ .

• A)bias
• B)a control group
• C)a placebo
• D)a randomized block design
• E)a lurking variable

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Definitions:

Heart Attack

A medical emergency characterized by the death of heart muscle due to the loss of blood supply.

Stroke

An event in the cardiovascular system in which a blood clot or plug of fat blocks an artery and cuts off the blood supply to a particular area of the brain.

Unplanned Pregnancy

An unplanned pregnancy occurs when a woman becomes pregnant without intending to prior to conception, often leading to challenging decisions and adjustments.

Schizophrenia

A chronic and severe mental disorder that affects how a person thinks, feels, and behaves, leading to distorted perceptions of reality.