What type of assessment includes presenting multiple objects/activities to observe duration spent on each?

The type of assessment that involves presenting multiple objects or activities to observe the duration spent on each is known as a Free Operant Assessment. This assessment method allows individuals to engage with different items at their own pace, providing valuable insights into preferences based on how much time they choose to spend with each option.

During a Free Operant Assessment, a participant can freely interact with the available stimuli without any restrictions, making it easier to gauge their interests and preference hierarchies. The focus is on observing natural behavior and the lengths of engagement, rather than simply whether an individual chooses a stimulus or not.

This method is particularly effective in identifying reinforcers for individuals, as it highlights which objects or activities sustain attention and engagement over time. In contrast, other assessment types, such as Single Stimulus Assessments, present one item at a time, and Multiple Stimulus with Replacement involves choices but does not track duration spent on each option in the same way. Cumulative Record Assessments focus on tracking behaviors over time rather than direct measurement of preferences through duration.