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The Effects of Sanction Intensity on Criminal Conduct - JDAI Helpdesk

The Effects of Sanction Intensity on Criminal Conduct - JDAI Helpdesk

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<str<strong>on</strong>g>of</str<strong>on</strong>g>fenders in our sample are older (see Table 2.1), we would expect to see the majority <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

their criminal <str<strong>on</strong>g>of</str<strong>on</strong>g>fending taking place during their teenage years, so the lack <str<strong>on</strong>g>of</str<strong>on</strong>g> data <strong>on</strong><br />

charges filed under the age <str<strong>on</strong>g>of</str<strong>on</strong>g> eighteen is a substantial omissi<strong>on</strong>. However, data are<br />

available where the <str<strong>on</strong>g>of</str<strong>on</strong>g>fender was charged as an adult, even if the <str<strong>on</strong>g>of</str<strong>on</strong>g>fense was committed<br />

while s/he was under eighteen.<br />

Some <str<strong>on</strong>g>of</str<strong>on</strong>g> the covariates and c<strong>on</strong>trol variables we include in our model are likely to<br />

be c<strong>on</strong>founded with crime outcomes. For example, it is well-established that younger<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g>fenders commit more crime than older <str<strong>on</strong>g>of</str<strong>on</strong>g>fenders.<br />

M<strong>on</strong>ths in jail post-random<br />

assignment may also be associated with crime outcomes, as those who spend more time<br />

in jail are likely to be more serious <str<strong>on</strong>g>of</str<strong>on</strong>g>fenders, so will be at greater risk <str<strong>on</strong>g>of</str<strong>on</strong>g> re<str<strong>on</strong>g>of</str<strong>on</strong>g>fending<br />

while at liberty. For reference we present the c<strong>on</strong>diti<strong>on</strong>al distributi<strong>on</strong>s <str<strong>on</strong>g>of</str<strong>on</strong>g> these two<br />

variables with the likelihood <str<strong>on</strong>g>of</str<strong>on</strong>g> committing a new charged <str<strong>on</strong>g>of</str<strong>on</strong>g>fense in Appendix G.<br />

Neither <str<strong>on</strong>g>of</str<strong>on</strong>g> these issues poses a substantial threat to the validity <str<strong>on</strong>g>of</str<strong>on</strong>g> the data because the<br />

covariates are not additi<strong>on</strong>ally c<strong>on</strong>founded with the treatment instrument.<br />

Sample characteristics<br />

We assess our four research questi<strong>on</strong>s using the full experimental sample <str<strong>on</strong>g>of</str<strong>on</strong>g> 1,559<br />

<str<strong>on</strong>g>of</str<strong>on</strong>g>fenders (800 LIS treatment and 759 SAU c<strong>on</strong>trol). <str<strong>on</strong>g>The</str<strong>on</strong>g>y were followed up from the<br />

date <str<strong>on</strong>g>of</str<strong>on</strong>g> random assignment, October 1, 2007, for two years to September 30, 2009. Of<br />

the 800 <str<strong>on</strong>g>of</str<strong>on</strong>g>fenders randomly assigned to LIS, 94.5 per cent (N = 756) actually received the<br />

treatment and 5.5 per cent (N = 44) did not. Of the 759 SAU <str<strong>on</strong>g>of</str<strong>on</strong>g>fenders, 3.2 per cent (N =<br />

24) were inadvertently placed <strong>on</strong> low-intensity supervisi<strong>on</strong>. Offenders are analyzed<br />

according to assigned treatment except in our instrumental variables model, as discussed<br />

86

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