The autoclitic is among the least studied and most complex verbal operant named and described by Skinner. The descriptive autoclitic is one subtype, which among other functions can describe the strength of the response. If the clarity of the stimulus is one source of response strength for tacts, manipulating stimulus clarity should evoke different…

Since Skinner's conceptualization of the mand, applied behavior analysis researchers have used the concept to develop stimulus control transfer procedures effective for addressing manding deficits. More recently, researchers have explored the clinical utility of reinforcing mand variability during mand training and functional communication…

Evaluative conditioning (EC) is generally considered to be one of the routes via which likes and dislikes are acquired. We identify recent trends in EC research and speculate about the topics that will dominate future research on EC. Many of the recent developments in EC research were shaped by functional definitions of EC that refer only to…

Skinner's definition of verbal behavior, with its brief and refined versions, has recently become a point of controversy among behavior analysts. Some of the arguments presented in this controversy might be based on a misreading of Skinner's (1957a) writings. An examination of Skinner's correspondence with editors of scientific journals shows his…

We begin with the suggestion that the definition of Attention Deficit Hyperactive Disorder (ADHD) still faces some challenges. Conceptually, inhibition of the Pavlovian kind preexisted the "behavioral inhibition" popular in the USA; the difference between them has to be understood in order to understand ADHD. The present project examines…