D: self-perception theory emphasizes more than does dissonance theory the effects that our attitudes have on behavior

Incorrect.
Self-perception is defined by Myers (pg 157) as "the theory that when unsure of our attitudes, we infer them much as would someone observing us-- by looking at our behavior and the circumstances under which it occurs".  From this definition, we can see that self perception says that the only effect that attitudes have on behaviors is that they are inferred from them.  This is not really much of an effect, because attitudes can not really influence behaviors at all, since self-perception theory states that the attitudes are not accessible.  Since self-perception theory does not really emphasize the effect that attitudes have on behavior, choice D is incorrect.  Also, the effects of attitudes on behavior is a central part of cognitive dissonance theory.