. "Perspectives on Behavior Science" . . "Semiannual" . "2.835" . . . . . . "06281659" . . . . . "2020" . . "Perspect. Behav. Sci." . "2196-8918" . . . "83647787" . "Perspectives on Behavior Science" . . . . "1978" . . "0738-6729" . . "The Behavior Analyst" .