In a graph of the results from an ABAB reversal design, which feature justifies a conclusion that the treatment causes changes in behavior?
a. the size of the change in behavior when the treatment is first introduced
b. the time delay between the introduction of the treatment and the first change in magnitude of change
c. a permanent change in behavior that continues even after the treatment is withdrawn
d. repeatedly demonstrating that behavior changes consistently when the treatment is introduced, withdrawn, and introduced again
Question 2
The vertical distance from a point to the regression line is the ____.
a. error term
b. regression coefficient
c. value
d. slope
Photomicro graph showing the three layers of the skin.
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