Daniel Gets an "A" on His Developmental Psych Test and Eva

Daniel gets an "A" on his developmental psych test and Eva gets a "C." Which conclusion is NOT one a behaviorist might make?

A) Eva may have low self-efficacy with regard to this class.
B) Daniel is more genetically gifted than Eva.
C) Eva may not have been reinforced for doing well in school in the past.
D) Daniel may have been reinforced for doing well in school in the past.