A Psychologist Was Looking at the Effects of an Intervention

Multiple Choice

A psychologist was looking at the effects of an intervention on depression levels. Three groups were used: waiting list control, treatment and post treatment (a group who had had the treatment 6 months before) . The change in depression levels over the time of the treatment was recorded (although bear in mind that only the treatment group actually got any treatment during this time) . The SPSS output is below. Based on this output, what should the researcher conclude?

A) The treatment groups did not have a significant effect on the change in depression levels, F(2, 26.44) = 4.35.
B) The treatment groups had a significant effect on the change in depression levels, F(2, 35.10) = 5.11.
C) The treatment groups had a significant effect on the change in depression levels, F(2, 45) = 5.11.
D) The treatment groups did not have a significant effect on the change in depression levels, F(2, 45) = 5.11.