Final answer:
Dr. Houltin is practicing group therapy, where multiple clients meet and share information and provide feedback to each other.
Step-by-step explanation:
The practice Dr. Houltin is engaged in is called group therapy.
In group therapy, a therapist meets with several clients simultaneously and facilitates a therapeutic environment where clients can share information and provide feedback to each other. This approach can be beneficial as it allows clients to gain different perspectives, support, and insights from their peers.