A 9th grade class is chosen for an experiment. A random half of the students receive specialized one-on-one tutoring in the classroom twice a week. The other half of the students work in study groups in the same classroom as the one-on-one students. The experiment shows that test scores increased at the same rate for both experimental and control conditions. This is surprising, given that almost every other study of this specialized training showed dramatic improvements in the treatment group. What might be going on in this experiment?

Question

hockeychick23 · Answer

A. both groups experienced a placebo effect
B. The double blind procedure masked the differences
C. The blocking design was flawed
D. The treatment group was not separate enough from the control group
E. Theres no real treatment