Getting ready for your BCBA exam? You’re in the right place.
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.
My goal isn’t just to help you pass, but to help you understand every concept deeply.
Whether you get a question right or wrong, you’ll see detailed feedback explaining why, so you’ll be ready for that type next time. I want you to walk into test day feeling confident, calm, and prepared.
Many students have shared that these questions felt almost identical to the real exam and that’s exactly what I was aiming for. I’d love to hear how you did please share your score in the comments below! It really helps encourage others who are preparing for the exam. 🙂
I built this site to keep high-quality BCBA prep resources free and accessible for everyone, which is why it’s supported by ads. If it helped you, it’d mean a lot if you shared it with your peers.
If you want to keep practicing, check out the BCBA section for more tests and study materials!
Bookmark this site using Ctrl + D or tap ‘Add to Favorites’ on your mobile browser.
Results
#1. A researcher is conducting a study to determine how receiving flowers affects a person’s opinion. The experimental protocol strictly specifies that only flowers are to be delivered to participants. However, during one trial, the participant’s boyfriend, unaware of the protocol, delivers both flowers and a box of chocolates, thus introducing an additional, uncontrolled variable into the experimental setting. The introduction of this extra variable directly challenges the researcher’s ability to confidently attribute any observed changes in opinion solely to the flowers. Based on this scenario, what is the most immediate and direct threat posed to the scientific rigor and interpretability of the study’s results?
The most immediate and direct threat in this scenario is to procedural fidelity Procedural fidelity refers to the extent to which the independent variable the intervention or experimental manipulation is implemented as planned and described The experimental protocol dictated that only flowers should be delivered The introduction of chocolate by the boyfriend is a deviation from this preestablished protocol meaning the intervention delivering flowers was not implemented exactly as intended This threatens procedural fidelity because it introduces an uncontrolled variable chocolate that could influence the outcome making it difficult to ascertain if any observed change in opinion is due to the flowers the chocolate or a combination of both Lets consider why the other options are incorrect Compromised external validity External validity refers to the extent to which the results of a study can be generalized to other settings participants or conditions While deviations in protocol can eventually impact the generalizability of findings the immediate issue is the integrity of the intervention within the current study We are not there yet in terms of worrying about generalization the problem is the current studys execution Increased internal validity Internal validity refers to the extent to which a study establishes a trustworthy causeandeffect relationship between the independent and dependent variables free from the influence of extraneous variables Introducing an uncontrolled variable like chocolate decreases rather than increases internal validity because it creates a confound making it harder to isolate the effect of the flowers Eliminated confounds A confound is an extraneous variable that systematically varies with the independent variable and could potentially explain the observed effects In this case the chocolate is adding a confound not eliminating one The uncontrolled presence of chocolate makes it impossible to confidently determine if the flowers alone caused any change in opinion thereby creating a confounding variable
Bookmark this site using Ctrl + D or tap ‘Add to Favorites’ on your mobile browser.