Hearing someone say “textual behavior” and then saying it yourself is NOT textual behavior because the prior stimulus is not the response-product of writing behavior. It would be an example of echoic behavior.
A form of verbal behavior with the following features:
The response is vocal
It is controlled by a prior stimulus that is the response-product of writing behavior
There is point-to-point correspondence between the stimulus and the response
The specific topography and dynamic characteristics of the vocal response
The specific form of the visual verbal stimulus (e.g., written, printed, or typed)
Formal and dynamic features of the response
Whether or not there is any reinforcement for the current response
The “meaning” of either the stimulus or the response