responsiveness to stimulation
relative susceptibility to chemical reaction
Sensitive mental touch; special skill or faculty; keen perception or discernment; ready power of appreciating and doing what is required by circumstances; the ability to say the right thing.
The stroke in beating time.
A verbal operant which is controlled by a nonverbal stimulus (such as an object, event, or property of an object) and is maintained by nonspecific social reinforcement (praise).
The sense of touch; feeling.
To use a tact (a kind of verbal operant; see noun sense).