Author Question: In experimental research, extraneous variables are always A) between-group variables. B) ... (Read 106 times)

jho37 · **on:** Aug 4, 2018

In experimental research, extraneous variables are always

A) between-group variables.
B) within-group variables.
C) organismic variables.
D) response variables.

Question 2

Making sure the experimental and control groups are as similar as possible at the start of the experiment and that they are treated in exactly the same way except for the independent variable manipulation controls for

A) error variance.
B) extraneous variance.
C) experimental effects.
D) experimental variance.