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Which of the following should be in the subject line of all emails I send to Professor Sanchez?

A primary reinforcer is an unconditioned reinforcer.

A child in a classroom engages in 1-11 instances of self-injury per session. The BCBA decides to implement response blocking as an intervention. Based on the data above the intervention of response blocking most likely

You performed a paired-stimulus preference assessment with a learner, and reading books was consistently chosen the most. What does this imply about reading books for the learner?

According to the graph of preference assessments results

During a classroom management course, a teacher decides to implement a new strategy to increase student participation. Each time a student volunteers to answer a question in class, they receive a sticker. Over the following weeks, the teacher notices a significant increase in the number of students raising their hands to participate. This scenario is an example of which behavioral principle?

Establishing operations are relatively consistent and do not tend to change over time.

One benefit of free operant preference assessments is:

Which assessment method is most appropriate when determining the efficacy of a stimulus as a reinforcer as the requirements to earn that reinforcer change (increase) over time?

Elsa conducted a preference assessment for Jordan, a 5 year-old-boy. She arranged 8 stimuli on a table and allowed him a little time to interact with the stimuli prior to the assessment. Then, she began her assessment, allowing Jordan to select a stimulus and play with it for several seconds. When time was up, Elsa put the toy away and allowed Jordan to select another toy. She repeated this procedure until there were no toys left. What form of preference assessment is this?