Free BCABA Concepts and Principles Practice Questions

The Concepts and Principles domain represents 12% of the BCABA exam and covers respondent and operant conditioning, motivating operations, stimulus control, and verbal behavior. Review each answer and explanation as you practice.

The BCABA exam format is 175 questions in 240 minutes; this page is a focused domain sample.

BCABA Concepts and Principles Sample Questions with Answers

Sample Question 1 — Concepts and Principles

A single instance of a client raising their hand during group instruction is BEST described as a:

  1. A. Behavioral repertoire
  2. B. Stimulus class
  3. C. Response (Correct answer)
  4. D. Response class

Correct answer: C

Explanation: C is correct because a response is a single, specific instance of behavior. A refers to all of the behaviors a person can do, or a set of behaviors relevant to a skill area. B refers to a group of stimuli that share common features or functions, not to behavior. D refers to a group of responses that share a common function or form, not a single instance.

Sample Question 2 — Concepts and Principles

A child gets a parent's attention by tugging the parent's sleeve, calling "Mom," and tapping the parent's arm. Because all three responses produce the same effect on the environment, together they are BEST described as a:

  1. A. Topographical response class
  2. B. Functional response class (Correct answer)
  3. C. Behavioral repertoire
  4. D. Stimulus class

Correct answer: B

Explanation: B is correct because responses that differ in form but produce the same effect on the environment (here, parental attention) make up a functional response class. A would group responses by their shared form, but tugging, calling, and tapping look very different. C refers to all of the behaviors a person can perform, not a set of responses grouped by shared effect. D refers to a group of stimuli, not a group of responses.

Sample Question 3 — Concepts and Principles

A child's screaming is maintained by adult attention. When the team places screaming on extinction, the child begins repeatedly tapping adults on the shoulder, a response that had also occasionally produced attention in the past. Which explanation is MOST accurate?

  1. A. Both responses are in one functional response class, so tapping increased when screaming no longer produced attention (Correct answer)
  2. B. Tapping is spontaneous recovery of screaming, because a previously reinforced response returned after extinction began
  3. C. Tapping is respondent behavior elicited by the stress of extinction and is unrelated to attention
  4. D. Tapping is stimulus generalization of screaming to a new setting, because the child is seeking attention elsewhere

Correct answer: A

Explanation: A is correct because when one member of a functional response class no longer produces reinforcement, other members that have produced the same reinforcer are likely to increase. B describes the reappearance of the extinguished response itself (screaming), not the increase of a different response. C is wrong because tapping has a history of producing attention, which points to an operant relation. D is wrong because stimulus generalization concerns the same response occurring in the presence of new stimuli, not a different response occurring in the same setting.

Sample Question 4 — Concepts and Principles

In behavior analysis, a stimulus is BEST defined as:

  1. A. A single instance of behavior that can be observed and measured
  2. B. A group of events that share common physical features or functions
  3. C. An energy change that affects an organism through its receptor cells (Correct answer)
  4. D. An event that increases the future frequency of behavior it follows

Correct answer: C

Explanation: C is correct because a stimulus is any physical energy change in the environment that affects an organism through its senses. A describes a response, not a stimulus. B describes a stimulus class rather than a single stimulus. D describes a reinforcer, which is one of many possible functions of a stimulus.

Sample Question 5 — Concepts and Principles

A client says "dog" when shown a photo of a beagle, a cartoon poodle, and a live golden retriever. These different stimuli that all evoke the same response are BEST described as a:

  1. A. Conditioned reinforcer
  2. B. Response class
  3. C. Stimulus class (Correct answer)
  4. D. Establishing operation

Correct answer: C

Explanation: C is correct because a stimulus class is a group of stimuli that share common elements or functions, such as evoking the same response. A refers to a stimulus that functions as a reinforcer because of a learning history, not to a group of stimuli that evoke a response. B refers to a group of responses, not a group of stimuli that evoke a response. D alters the value of a reinforcer and the frequency of behavior that produced it; it does not describe a group of evoking stimuli.

Sample Question 6 — Concepts and Principles

A BCaBA groups a red traffic light, a crossing guard's raised hand, and a "STOP" sign together because each of these physically different stimuli evokes stopping. This grouping is based on which feature?

  1. A. A shared response topography
  2. B. A shared physical form
  3. C. A shared function (Correct answer)
  4. D. A shared temporal position

Correct answer: C

Explanation: C is correct because a functional stimulus class includes stimuli that differ in appearance but have the same effect on behavior. A describes a way of grouping responses, not stimuli. B would group stimuli that look or sound alike, but these stimuli differ in appearance. D would group stimuli by when they occur relative to behavior, such as all antecedents, not by their common effect.

Sample Question 7 — Concepts and Principles

Which of the following is an example of respondent behavior?

  1. A. An adult presses a button to call an elevator to the floor
  2. B. A teenager sends a text message to a friend
  3. C. A student raises a hand to be called on by the teacher
  4. D. Pupils constrict when a bright light shines in the eyes (Correct answer)

Correct answer: D

Explanation: D is correct because pupil constriction is elicited by a preceding stimulus (bright light) and is not controlled by its consequences, which defines respondent behavior. A is operant behavior maintained by its consequence (the elevator arriving). B is operant behavior maintained by consequences such as receiving a reply. C is operant behavior controlled by its consequences (being called on).

Sample Question 8 — Concepts and Principles

After several painful dental visits, a child's heart rate increases as soon as the child sees the dentist's white coat. This change is BEST explained by:

  1. A. Stimulus generalization of an operant behavior that was reinforced in the dental office
  2. B. Respondent conditioning, because the white coat was repeatedly paired with painful procedures (Correct answer)
  3. C. Negative punishment, because the painful visits removed the child's access to preferred activities
  4. D. Operant reinforcement, because the increased heart rate was followed by the end of the visit

Correct answer: B

Explanation: B is correct because respondent conditioning occurs when a neutral stimulus (the white coat) is paired with an unconditioned stimulus (painful procedures) until it elicits a similar response. A is wrong because no operant response or reinforcement history is described. C is wrong because punishment describes a decrease in operant behavior, not the elicitation of a physiological response. D is wrong because increased heart rate is elicited by antecedent stimuli rather than controlled by its consequences.

Sample Question 9 — Concepts and Principles

A client cries and runs away when a large dog appears. The team notes that crying seems to be elicited by the sight of the dog, while running away reliably ends the client's contact with the dog. Which analysis is MOST accurate?

  1. A. Both crying and running away are operant behaviors maintained by positive reinforcement from caregivers
  2. B. Running away is respondent behavior, and crying is operant behavior maintained by escape from the dog
  3. C. Crying is partly respondent, elicited by the dog; running away is operant, negatively reinforced by escape (Correct answer)
  4. D. Both crying and running away are respondent behaviors, because both occur immediately after the dog appears

Correct answer: C

Explanation: C is correct because emotional responses such as crying can be elicited by conditioned stimuli (respondent), while escaping the dog is operant behavior strengthened by removing the aversive stimulus. A is wrong because nothing in the scenario indicates caregiver attention, and crying is described as elicited. B reverses the relations described: crying is elicited, while running away produces escape. D is wrong because running away is maintained by its consequence (ending contact with the dog), which makes it operant.

Sample Question 10 — Concepts and Principles

Negative reinforcement is BEST described as:

  1. A. The presentation of a stimulus immediately following a behavior that decreases the future frequency of that behavior
  2. B. The removal of a stimulus immediately following a behavior that increases the future frequency of that behavior (Correct answer)
  3. C. The discontinuation of reinforcement for a behavior that decreases the future frequency of that behavior
  4. D. The removal of a stimulus immediately following a behavior that decreases the future frequency of that behavior

Correct answer: B

Explanation: B is correct because negative reinforcement involves removing or reducing a stimulus contingent on behavior, which increases the future frequency of that behavior. A describes positive punishment. C describes operant extinction. D describes negative punishment.

Keep Practicing

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