What Did Marshall and Barbaree (1988) Find in Their Study

question 64

Multiple Choice

What did Marshall and Barbaree (1988) find in their study of the effects of their community-based program?

• A) Treated offenders tend to reoffend far less than untreated offenders.
• B) Despite the benefits of treatment, there is little savings, in terms of financial costs, to society.
• C) Phallometric assessment scores tend to be less deviant after treatment.
• D) Community-based programs are more successful than are prison-based programs.
• E) Changing sexual offenders' deviant sexual behaviours is very difficult to do.

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Definitions:

Test Statistic

A number calculated from sample data used to make inferences about a population parameter in hypothesis testing.

Mean Square

The mean square is the average of the squares of a set of numbers, often used in variance and regression analysis.

Degrees of Freedom

The number of values in a statistical calculation that are free to vary without violating any constraints.

F-statistic

A ratio of two variances that is used in analysis of variance (ANOVA) to assess the equality of variances across groups.