Preference Assessment: Free Operant Observation

In the video above, the instructor is conducting a free operant observation. Free operant observations allow you to determine which toys a child may like or dislike. Free operant assessments are most appropriate when you are not familiar with the types of items a child may like or dislike. It is also an appropriate assessment to use if a child engages in challenging behavior when favorite toys are taken away, because the child is able to play freely with any item as long as he or she desires.
For more information regarding free operant observations and to download free data collection sheets, visit vkc.mc.vanderbi...

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Latency develops later in her

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Is that a type of timer that allows her to keep time for alllll of those items?