A Study by Purcell and His Colleagues Tested the Hypothesis

question 28

Multiple Choice

A study by Purcell and his colleagues tested the hypothesis that asthmatic children would become symptom free soon after being sent away from their parents. The results of this study indicated that

• A)all asthmatic children improved dramatically when they were separated from their parents.
• B)the children whose symptoms had been classically conditioned improved during separation, whereas the other children did not improve.
• C)the children for whom emotions were important precipitants improved during the separation, whereas the other children did not improve.
• D)the children for whom emotions were important precipitants did not improve during the separation, whereas the other children did improve.

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Definitions:

Oxygen Source

An entity or process that produces or supplies oxygen, necessary for the survival of most life forms on Earth.

Air

A mixture of gases that constitute the Earth's atmosphere, primarily composed of nitrogen, oxygen, argon, and carbon dioxide.

Unbalanced Reaction

A chemical equation where the number of atoms for each element is not the same on both sides of the equation.

Gunpowder

A mixture of saltpeter (potassium nitrate), sulfur, and charcoal (carbon) that explodes when ignited.