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I created RBTExamPrep.com to give you the most realistic BCBA mock exam experience possible 185 questions designed to feel just like the real thing.
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Results
#1. Jay, a BCBA, implemented an intervention to teach a client independent dressing skills. After several weeks, the client began dressing himself independently. However, Jay’s observations and data analysis revealed that the client’s improvement was likely due to the client watching an older sibling, rather than the specific procedures implemented by Jay. This scenario indicates that Jay’s intervention lacks a crucial element of experimental rigor. What does this intervention lack?
Internal validity refers to the extent to which an experiment demonstrates that the independent variable the intervention is responsible for the observed changes in the dependent variable the clients behavior and not some other uncontrolled factors or extraneous variables When a behavior change occurs but it is attributed to an external or confounding factor like observing a sibling rather than the intervention itself the intervention is said to lack internal validity This signifies a lack of experimental or functional control meaning the researcher cannot confidently conclude that their intervention caused the change External validity in contrast concerns the generalizability of findings to other settings clients or behaviors Social validity refers to the significance of the goals the appropriateness of the procedures and the social importance of the results Observer validity is not a standard term in ABA related to experimental design validity it might refer to the accuracy or agreement of observations but not the overall experimental control
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