Table 6.

Ex-ante vs. Ex-post Benefits of the CPC Preschool Program, Per Program Participant (Present Value at Age 19, 2008 Dollars Discounted at 3%)

	Ex-ante Prediction	Ex-post Benefit
CPC effect on the mean number of petitions to juvenile court	− 0.33	na
Target population crime rate	0.30	na
Fraction of adult criminal careers reduced	0.80	na
CPC effect on adult criminal behavior	−0.079	−0.118
CJS cost of an adult criminal career	$43,553	$43,553
Decrease in CJS costs of adult criminal career	$3,449	$5,139
Ratio of victimization costs to CJS costs	4.5:1	4.5:1
Criminal victimization costs	$15,521	$23,126
Tangible victimization costs	$3,616	$5,388
Intangible victimization costs	$11,905	$17,738
Adult CJS savings and averted victimization costs	$18,970	$28,264