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Static-2002 coding rules (2009) - Static-99

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Category 2: Persistence of Sexual Offending<br />

CATEGORY II: PERSISTENCE OF SEXUAL OFFENDING (Score 0 – 3<br />

points)<br />

The Basic Principle: This category and the other items that relate to criminal<br />

history and the measurement of persistence of criminal activity are based on a<br />

firm foundation in the behavioural literature. As long ago as 1911 Thorndyke<br />

stated that the “the best predictor of future behaviour is past behaviour.”<br />

Research has yet to establish whether the propensity to commit sexual crimes is<br />

best considered a distinct construct or the emergent property of other factors.<br />

Nevertheless, the link between prior sexual crime and sexual recidivism is<br />

beyond dispute (Hanson & Bussière, 1<strong>99</strong>8; Hanson & Morton-Bourgon, 2004).<br />

This category includes three items:<br />

Prior Sentencing Occasions for Sexual Offences (Score 0 – 3 points).<br />

Any Juvenile Arrest for a Sexual Offence and Convicted as an Adult for a<br />

Separate Sexual Offence (Score 0 - 1 point).<br />

Rate of Sexual Offending (Score 0 - 1 point).<br />

To calculate the total score for the “Persistence of Sexual Offending” subscale,<br />

score all three individual items to get the raw score for each item. Sum the raw<br />

scores for the three items. The summed raw scores are recoded according to the<br />

table below to obtain the subscale score for the category “Persistence of Sexual<br />

Offending”:<br />

RAW<br />

SCORE<br />

SUBSCALE<br />

SCORE<br />

0 0<br />

1 1<br />

2, 3 2<br />

4, 5 3<br />

See example on next page.<br />

13

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