Which procedure involves obstructing the view of the learner while they remain in the time-in setting?

• A. Contingent observation
• B. Time-in
• C. Exclusion time-out
• D. Partition time-out

Answer: (D)

Partition time-out places the learner in an opaque partition within the same room, so they stay in the time-in setting but cannot see the ongoing activities or access the reinforcement. That visual obstruction is the defining feature, making it a nonexclusionary timeout that reduces reinforcement temporarily without removing the learner from the setting.

In contrast, time-in simply involves staying in the environment with access to reinforcement; exclusion time-out moves the learner out of the setting entirely; and contingent observation involves a setup where the learner can observe others under certain conditions, without the specific opaque barrier driving the partition time-out concept.