Extinction and recovery of the discriminative stimulus effects of nicotine (0.3 mg/kg) was investigated with a devalued food reinforcer (rats sated). Sixteen rats were trained in a counterbalanced one manipulandum (nose-poke) drug discrimination procedure with the roles of nicotine and saline counterbalanced as S[superscript D] and S[superscript…

Teachers and teacher educators seem to be little aware of some major concepts about instruction that provide important insights into the central requirements for learning. A common misconception is that motivation has to do with wanting or desiring. It is instead attention to stimuli that is influenced by two powerful agents--(1) suspense,…