00:01
Okay, so we're looking at this question where we have participants that aren't randomly assigned to groups and they're tested only once after exposure to either one level of the independent variable or the other.
00:13
So we're going to run through the answer choices and knock out the ones that actually don't work first.
00:18
So we'll start with quasi -independent variable.
00:20
A quasi -independent variable is some variable that's used to compare groups of participants without manipulation.
00:29
That's not what's going on here because we actually are treating the groups differently in one treatment or the other.
00:35
So we can get rid of that one.
00:37
Looking at the non -equivalent control group post -only design, what we actually have here are groups that are not equivalent because we did not assign them participants randomly to the group.
00:49
They were just in there, which means that our control group isn't necessarily the same kind of group as our treatment group.
00:59
They might differ in some key ways because they weren't randomly assigned...