Many Soldiers Returning from the War in Iraq Have Suffered

question 17

Multiple Choice

Many soldiers returning from the war in Iraq have suffered from posttraumatic stress disorder (PTSD) .However,your friend from high school who has returned from a protracted active deployment seems to be coping well even though he had some truly horrible experiences.How might you explain this difference with regard to the biological and environmental contributions to behavior?

• A) Your friend may not have a genetic susceptibility for PTSD.
• B) Environment is not an important factor in determining behavior.
• C) Your friend inherited a genetic predisposition to PTSD.
• D) Soldiers' experiences in Iraq really are not as bad as people say.

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Definitions:

Significantly Equal

A term not typically used in statistics; might refer to the concept of achieving statistical significance to claim no difference or equivalence between groups.

T-test

An analytical procedure for assessing if the average scores of two separate groups are significantly dissimilar.

Null Hypothesis

A statement in hypothesis testing that proposes no significant difference or effect, serving as the default assumption to be tested against.

Probability

A measure quantifying the likelihood that certain events will occur.