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#1. A track coach, Usain, is training a student for the 100-yard dash. As a warm-up, the student performs 20 jumping jacks and 25 burpees, which takes 5 minutes. The student then walks to the starting line. Usain yells Go and the student completes the sprint in 11 seconds. Three minutes later, Usain yells Go again, prompting the student to start the next sprint. Considering only the student’s 100-yard dash performance, what does the three minutes later interval between Usain’s commands primarily represent in terms of behavioral measurement?
This question requires a precise understanding of behavioral measurement definitions particularly in a scenario containing potential distractors Interresponse time IRT is a fundamental temporal dimension of behavior Interresponse time IRT is defined as the time that elapses between the end of one instance of a response and the beginning of the next instance of the same response In this scenario the response is the students 100yard dash sprint The first sprint starts when Usain yells Go and ends after 11 seconds the duration of the sprint The text states Three minutes later Usain yells Go again and the student starts running This three minutes later refers to the time from the completion of the first sprint the end of the first response to the start of the next opportunity for the sprint the beginning of the next response triggered by the second Go The text specifically identifies the three minutes later as the time in between behaviors and labels it as IRT meaning the interval between the completion of the first sprint and the initiation of the next sprint Lets consider why the other options are incorrect A Latency Latency is the time from the onset of a stimulus eg Usain yelling Go to the initiation of the response The 11 seconds of the sprint is duration and the 3 minutes is not latency because it occurs after the first sprint has ended and before the next sprint has started C Duration Duration is the total time a behavior occurs Examples of duration in this scenario include the 11 seconds for one sprint or the 5 minutes for the warmup activities The 3minute interval is a time between behaviors not the length of a behavior itself D Intertrial interval ITI While ITI is also a temporal measure it specifically refers to the time between the end of one discrete trial and the presentation of the discriminative stimulus SD for the next trial In many contexts IRT and ITI can seem similar However IRT focuses on the time between responses themselves whereas ITI focuses on the time between discrete trials which often includes the presentation of the SD In this context the text defines the time in between behaviors sprints as IRT emphasizing the responsetoresponse timing
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