BACB BCABA Exam - Topic 3 Question 113 Discussion

Actual exam question for BACB's BCABA exam

Question #: 113
Topic #: 3

Missy is using a multiple probe across participants design to evaluate the effects of peer tutoring to teach three students to complete division problems. These three students have had no prior instruction in division. Missy MOST LIKELY chose a multiple probe design rather than a multiple baseline design becausE.

Athe students' baseline scores will be zero.

Bthe students could not miss class very often.

Cother extraneous variables may cause their skills to improve.

Dshe is interested in comparing the effects of three interventions at once.

Show Suggested Answer

Suggested Answer: A

by Roosevelt at Jul 10, 2025, 01:31 AM

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Major

5 months ago

Totally agree with Rozella, extraneous variables are a big deal!

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Paola

5 months ago

Wait, can you really use multiple probe if they have zero scores?

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Rozella

6 months ago

I think option C makes the most sense here.

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Solange

6 months ago

Not sure if this is the best choice, seems risky with no prior instruction.

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Giuseppe

6 months ago

A multiple probe design is great for zero baseline scores!

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Isadora

6 months ago

I don't think she's comparing three interventions at once, so D seems unlikely. I lean towards A or C, but I’m not completely confident.

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Keith

7 months ago

I feel like I saw a similar question about choosing between designs, and it had to do with extraneous variables affecting results. Maybe option C is relevant here?

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Ettie

7 months ago

I think Missy chose this design because the students have no prior instruction, so their baseline scores would be zero. That seems to fit with option A.

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Mariann

7 months ago

I remember that a multiple probe design is often used when you can't have a stable baseline, but I'm not sure if that's the main reason here.

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Moon

7 months ago

I'm pretty confident that the answer is C. The multiple probe design allows Missy to see if the peer tutoring intervention is effective, even if other factors might cause the students' skills to improve over time.

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Shanice

7 months ago

I think the multiple probe design is used when you want to see if the intervention has an effect, but you don't necessarily need to establish a stable baseline first. That makes sense in this case, since the students have no prior knowledge of division.

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Felix

7 months ago

Okay, let's see. The key here is that the students have had no prior instruction in division, so their baseline scores will likely be zero. That rules out option A. I'm leaning towards C, since other factors could cause their skills to improve over time.

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Shalon

8 months ago

Hmm, this is a tricky one. I'm not sure if I fully understand the difference between a multiple probe and multiple baseline design. I'll need to think this through carefully.

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Lyda

9 months ago

Option C is a valid concern, but a well-designed multiple probe study should be able to account for that. I think A is the way to go.

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France

10 months ago

That makes sense. It's important to consider the research question when choosing a design.

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Tammara

10 months ago

Option D is interesting, but I don't think that's the right answer here. Missy is looking at the effects of peer tutoring, not comparing multiple interventions.

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Bambi

8 months ago

C) other extraneous variables may cause their skills to improve.

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Veronika

8 months ago

A) the students' baseline scores will be zero.

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Lenna

10 months ago

I see your point, but maybe Missy wanted to see the effects of peer tutoring specifically.

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Rory

10 months ago

But wouldn't a multiple baseline design be better for comparing interventions?

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Ronald

10 months ago

Haha, imagine if Missy tried a multiple baseline design and the students just kept getting division right from the start. Talk about a boring study!

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Malcolm

9 months ago

C) other extraneous variables may cause their skills to improve.

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Tequila

10 months ago

A) the students' baseline scores will be zero.

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Stefany

10 months ago

I agree with Maia. The multiple probe design is better suited when you expect baseline scores to be zero, which is the case here.

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Micaela

10 months ago

That makes sense, it's important to consider that when choosing a research design.

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Latrice

10 months ago

I think Missy chose the multiple probe design because the students' baseline scores will be zero.

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Maia

10 months ago

Option A makes the most sense. If the students have had no prior instruction in division, their baseline scores will likely be zero, making a multiple probe design more appropriate.

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