Perry Preschool Project Results

Matching Perry and NLSY

• Matching Perry with NLSY by constructing the Socio-Economic Status (SES) for NLSY and applying Perry selection Rule based on SES for NLSY
• Comparisons between some family background variables, educational and income outcomes between Perry and the NLSY (North-Central Region Sub-sample)
• Comparisons between income variables with controlling for family background

Perry Treatment Effect

• Perry treatment effect on income, OLS, and permutation without restrictions on p-values
• Perry treatment effect on dropout probability, OLS, and permutation without restrictions on p-values
• Perry treatment effect on monthly income at age 27, income distribution graphs,
  income free from family background variables. Full OLS models,
  asymptotic robust p-values (to be replaced with permutation ones)

Rodrigo

• Background Readings
  • Lydersen, Stian and Petter Laake (2003). "Power comparison of two-sided exact tests for association in 2×2 contingency tables using standard, mid p, and randomized test versions," Statistics in Medicine, 22:3859–3871.
  • Agresti, Alan.(2001). "Exact inference for categorical data: recent advances
    and continuing controversies," Statistics in Medicine, 20:2709–2722
  • Romano, Joseph P. (2005). "Optimal testing of equivalence hypotheses," The Annals of Statistics, 33(3): 1036–1047.
• Matching
  • Procedure 2
  • Procedure 3
  • Procedure 4
  • Procedure 5, Male
  • Procedure 6, Male
• Score Analysis (Comments on Conditional Multivariate Tests)
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• Programs (WinZip Archive)

Added September 11, 2006

• Figure and Tables from email (WinZip archive)
• Results
  • Perry Treatment Effect and High IQ Participants
  • Correlations of Percentiles for Perry Cognitive Scores
  • Correlations of IQ Scores (text)
  • Individual Outcomes
  • Economic Outcomes
  • Educational Outcomes
  • CDF of Perry Income
  • Perry: Stanford-Binet Entry IQ by Cohort and Group Assigment
  • Stepdown Testing on Selected Perry Outcomes

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