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Results
#1. A BCBA instructs three RBTs to collect duration data on a client’s ‘screaming behavior.’ The operational definition provided is ‘Any loud, piercing vocalization exceeding the typical conversational volume of peers, lasting for more than 2 seconds, and not serving a communicative function.’ RBT A reports the client screamed for an average of 10 minutes per session. RBT B reports the client engaged in ‘loud vocalizations’ for an average of 12 minutes per session. RBT C sends data indicating the client engaged in ‘property destruction’ for an average of 5 minutes per session. Based solely on this information, which quality of good data is most clearly lacking in RBT C’s report?
The text highlights three crucial qualities of good data accuracy validity and reliability Accuracy refers to measuring the true value of what occurred We cannot definitively assess accuracy here without a true value to compare RBT Cs data against Reliability refers to the consistency of measurement when repeated We typically assess reliability through interobserver agreement IOA or by comparing repeated measures from the same observer which is not provided for RBT Cs data in isolation nor can it be assessed across different behaviors Validity refers to measuring what we are actually attempting to measure The BCBAs target behavior was screaming behavior RBT C however reported data on property destruction Because RBT C measured a different behavior than what was intended their data clearly lacks validity They are not measuring what they were asked to measure Treatment fidelity while important refers to the extent to which the intervention plan is implemented as intended which is a different aspect from the quality of the behavioral data itself
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