Final answer:
The therapist trains Braden's parents and preschool teachers to use positive reinforcement and time-out, which are two techniques based on operant conditioning.
Step-by-step explanation:
The techniques based on operant conditioning that the behavior therapist trains Braden's parents and preschool teachers to use are positive reinforcement and time-out.
Positive reinforcement involves providing rewards or incentives to reinforce desired behaviors. In this case, Braden may receive praise or a small reward when he exhibits acceptable behavior, such as calming down after a tantrum.
Time-out, on the other hand, is a form of negative punishment where Braden is temporarily removed from a desirable activity or environment as a consequence for misbehavior. For example, if Braden has a tantrum at preschool, he may be guided to a separate, quiet area for a few minutes until he calms down.