teacher-intervention

Study 1: n = 162
Study 2: n = 235

Study 1 Confirmatory

How severely should Greg be disciplined?

Study 1 Findings

    Welch Two Sample t-test

data:  study1Small$discSevereNum by study1Small$Condition
t = 1.0409, df = 159.12, p-value = 0.2995
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -0.1828565  0.5903600
sample estimates:
  mean in group Control mean in group Treatment 
               3.227848                3.024096 

Study 2 Findings

    Welch Two Sample t-test

data:  study2Small$discSevereNum by study2Small$Condition
t = 1.7025, df = 232.73, p-value = 0.09
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -0.04824855  0.66184867
sample estimates:
  mean in group Control mean in group Treatment 
               4.017544                3.710744 

Study 1 Secondary

Attributions for Greg’s behavior.

Study 1 Findings

    Welch Two Sample t-test

data:  study1Small$attributionsNum by study1Small$Condition
t = 0.24319, df = 158.93, p-value = 0.8082
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -0.2276994  0.2916475
sample estimates:
  mean in group Control mean in group Treatment 
               3.730769                3.698795 

Study 2 Findings

    Welch Two Sample t-test

data:  study2Small$attributionsNum by study2Small$Condition
t = -2.6346, df = 205.9, p-value = 0.009064
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -0.60913979 -0.08768492
sample estimates:
  mean in group Control mean in group Treatment 
               3.263158                3.611570 

Study 2 Confirmatory

How likely is it that you would say that Greg is lazy?

Study 1 Findings

    Welch Two Sample t-test

data:  study1Small$lazyNum by study1Small$Condition
t = 2.1508, df = 151.25, p-value = 0.03308
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 0.03301461 0.77833204
sample estimates:
  mean in group Control mean in group Treatment 
               2.417722                2.012048 

Study 2 Findings

    Welch Two Sample t-test

data:  study2Small$lazyNum by study2Small$Condition
t = 2.0969, df = 227.32, p-value = 0.03711
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 0.02601704 0.83682188
sample estimates:
  mean in group Control mean in group Treatment 
               2.885965                2.454545 

Study 2 Confirmatory

Although I’d like to believe otherwise, in my heart-of-hearts I don’t believe there is much that can be done to truly reduce socioeconomic differences in achievement.

Study 1 Findings

    Welch Two Sample t-test

data:  study1Small$gapMindsetNum by study1Small$Condition
t = -1.9646, df = 121.46, p-value = 0.05174
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -1.127628605  0.004307482
sample estimates:
  mean in group Control mean in group Treatment 
               4.746032                5.307692 

Study 2 Findings

    Welch Two Sample t-test

data:  study2Small$gapMindsetNum by study2Small$Condition
t = -2.2523, df = 169.96, p-value = 0.02558
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
 -1.08585851 -0.07149138
sample estimates:
  mean in group Control mean in group Treatment 
               4.345238                4.923913