The Likelihood of Detecting GSR on Swabs Taken from Living

question 28

Multiple Choice

The likelihood of detecting GSR on swabs taken from living subjects more than six hours after a firing has occurred is ________ the likelihood of detecting GSR within two hours of a firing.

• A) greater than
• B) less than
• C) the same as

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Definitions:

Pretest

An initial test or assessment conducted before the main test or experiment to evaluate participants' baseline abilities, knowledge, or attitudes.

Pretest-Posttest

A research design that measures the effect of an intervention by comparing conditions before and after the intervention is applied.

Posttest-Only

A research design where measures are taken only after the experimental manipulation, without a pretest comparison.

Mortality

The loss of subjects who decide to leave an experiment. Mortality is a threat to internal validity when the mortality rate is related to the nature of the experimental manipulation.