The tact is a form of verbal behavior where the speaker sees, hears, smells, tastes something and then comments about it. The tact is often associated with expressive labels. This video demonstrates examples of the tact.
Examples of the tact
A tact can be as simple as labeling what is seen.
Sometimes the non-verbal stimulus is an action.
It can also be more complex and include adjectives, parts of objects, and prepositions.
One thing that all of these scenarios have in common is that the individual does not want the item he or she is labeling. There is no MO or motivating operation as we see with a mand. For a mand to take place the individual must want the item or activity.