In a non-equivalent control group pretest-posttest design,

which of the following results could be interpreted to mean

that the IV had an effect on the DV?

a. A change in the experimental group's mean DV score

from pretest to posttest.

b. A greater change in the mean DV score from pretest to

posttest in the experimental group than in the control

group.

c. A greater change in the mean DV score between the

experimental group pretest and the control group pretest.

d. A change in the control group's mean DV score from

pretest to posttest.

e. none of the above

Which of the following is NOT a variation of the multiple

baseline design?

a. across subjects

b. across behaviours

c. across time

d. across situations

e. more than one of the above