Which format presents trials from various tasks in random order for a set number of trials or a set amount of time?

• A. Mass Trials
• B. Discrete Trial Teaching Procedures (DTT)
• C. Natural Environment Teaching (NET)
• D. Chaining

Answer: (A)

Mass Trials involve offering a high volume of discrete trials in a single session, often rotating among several tasks so the learner encounters responses for different targets in quick succession. The emphasis is on fluency and speed, achieved by delivering many opportunities within a set number of trials or a fixed time period. Because trials come from various tasks and are presented in a randomized or mixed order, the learner regularly shifts attention between targets, promoting quick responses and generalization across tasks. This contrasts with more task-specific formats that stay focused on one skill at a time, naturalistic teaching which embeds learning in everyday activities, or chaining, which builds a sequence of steps rather than randomized, multi-task practice within a single block.