Author Question: History effects occur in nonequivalent group designs because the groups probably have different ... (Read 76 times)

JMatthes · **on:** Jun 19, 2018

History effects occur in nonequivalent group designs because the groups probably have different participant characteristics.

a. True
b. False
Indicate whether the statement is true or false

Question 2

An instrumentation threat occurs when taking the pretest affects how participants do on the posttest.

a. True
b. False
Indicate whether the statement is true or false