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

Four-year learning outcomes: Intellectual and academic skills---page 1 of 2

Average undergraduate grade point average (self-reported)
    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  -.141 blue diamond blue diamond blue diamond  -.151 blue diamond blue diamond blue diamond  -.151 blue diamond blue diamond blue diamond  -.141 blue diamond blue diamond
  Informal interaction (model)  .024      .001  .091       -.188

General knowledge
    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  .007  .003  .003  .007
  Informal interaction (model)  .015 -.007  .243 blue square blue square blue square -.101

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  -.017  -.017  -.017  -.017
  Informal interaction (model)  .018  .051  .202  -.140      

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  .114  .114  .114  .114
  Informal interaction (model)  .223 blue square blue square blue square  .220 blue square blue square blue square  .182 blue square blue square blue square  -.019      

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  .162 blue square  .162 blue square  .162 blue square blue square  .162 blue square blue square
  Informal interaction (model)  .232 blue square blue square blue square  .144 blue square  .160 blue square blue square blue square  .021
Rest of this section of Table D2   |   Table D2 Menu   |   Appendix D