EXPERT REPORT OF PATRICIA GURIN
Gratz, et al. v. Bollinger, et al., No. 97-75321 (E.D. Mich.)
Grutter, et al. v. Bollinger, et al., No. 97-75928 (E.D. Mich.)
Table D2
Detailed regression summary tables: CIRP data base, African American students
Significant positive effects: blue square
Significant negative effects: blue diamond
Outcome Variable


Nine-year learning outcomes: Intellectual and academic skills

Academic ability
    Workshop model     Discussion model     Socializing model   Same race: Close friends
  in college model  
  Predictors r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3
  Classroom -.067 -.057 -.057 -.067
  Informal interaction (model) -.103 .026 .136 -.106

Writing
    Workshop model     Discussion model     Socializing model   Same race: Close friends
  in college model  
  Predictors r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3
  Classroom .130 .120 .120 .130
  Informal interaction (model) .118  .171 blue square blue square blue square .107 -.083

Listening ability
    Workshop model     Discussion model     Socializing model   Same race: Close friends
  in college model  
  Predictors r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3 r Step 1 Step 2 Step 3
  Classroom .025 .037 .037 .025
  Informal interaction (model) .012 .105 -.031 -.053


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