7. The article “Rate of Stuttering Adaptation Under Two ElectroShock Conditions” (Behavior Research Therapy, 1967: 49–54)

gives adaptation scores for three different treatments: (1) no shock, (2) shock following each stuttered word, and (3) shock during each moment of stuttering. These treatments were used on each of 18 stutterers, resulting in SST
3476.00, SSTr
28.78, and SSBl
2977.67.

a. Construct the ANOVA table and test at level .05 to see whether true average adaptation score depends on the treatment given.

b. Judging from the F ratio for subjects (factor B), do you think that blocking on subjects was effective in this experiment? Explain.