a nonvolunteer control group (those who refused the opportunity for treatment).
Findings of the study revealed that although the treatment group had the lowest reoffense rates for both sex and other violent crimes, main effects analyses did not yield conclusive results regarding the program's effectiveness. The results were said to highlight the importance of considering methodological aspects of research designed to examine treatment efficacy.
Several methodological aspects of were said to be important in efficacy studies. These included: appropriate comparison groups, managing attrition from both treatment and methodological standpoints, examining sex and other violent offenses separately as outcome variables, employing tests with adequate statistical power, and analyzing data while taking into account time at risk for reoffense.
In an extremely, interesting evaluative study of sex offender treatment programs, Fordham (1993) concluded that the best intervention
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