What happens to you when you conquer something hard?
A. You get hurt.
B. That thing which was hard for you becomes a
personal strength.
C. You feel sad.
D. You give up.

Using mr smith and his id, identify two potential internal validity threats that might affect the a—b design. tell me how that threat might impact conclusions in the a—b design. note #1: you cannot use maturation (since i already did that one for note #2: there are some mr smith id threats that won’t have much impact in a single case design.