2026/2027
BCBA Board Certified Behavior
Analyst Exam 2026/2027: Practice
Exams, Quizzes, and Answer
Explanations
Question 1:
A therapist gives a learner 30 seconds of tablet access immediately after the learner
independently requests a break. Across several sessions, independent break requests
increase. Which behavioral process most directly explains this change?
A. Positive reinforcement
B. Negative reinforcement
C. Positive punishment
D. Extinction
Correct Answer: A. Positive reinforcement
Rationale: Positive reinforcement occurs when a stimulus is added immediately after
a behavior and the behavior subsequently increases. Tablet access was presented after
the break request, and independent requesting became more frequent. Negative
reinforcement would require removal of an aversive stimulus. Punishment would
decrease behavior, while extinction would involve withholding previously available
reinforcement.
Question 2:
During difficult mathematics assignments, a student appropriately asks for assistance.
The teacher temporarily reduces the task difficulty, and the student begins requesting
help more consistently. Which process is operating?
A. Positive punishment
B. Negative punishment
C. Negative reinforcement
D. Respondent conditioning
Correct Answer: C. Negative reinforcement
Rationale: The student’s help-seeking increases because an aversive condition—the
difficult task requirement—is reduced following the request. This is negative
reinforcement because something unpleasant is removed or reduced and the preceding
behavior increases. Positive punishment adds a consequence to reduce behavior, while
negative punishment removes a preferred stimulus. Respondent conditioning involves
stimulus-stimulus associations rather than consequences.
,2026/2027
Question 3:
A child hits a sibling during a game. The parent immediately removes the child’s
gaming device for the remainder of the evening. Over several weeks, hitting decreases.
Which procedure is illustrated?
A. Negative reinforcement
B. Positive punishment
C. Negative punishment
D. Response extinction
Correct Answer: C. Negative punishment
Rationale: Negative punishment involves removing a valued stimulus following a
behavior to reduce that behavior’s future occurrence. The gaming device was
removed after hitting, and hitting decreased. Negative reinforcement also removes a
stimulus, but its purpose is to increase behavior. Positive punishment adds a
consequence, and extinction withholds the specific reinforcer that previously
maintained behavior.
Question 4:
A learner previously screamed because staff members provided attention. Staff
members begin consistently withholding attention following screaming, and the
behavior gradually decreases. Which intervention component is responsible for the
reduction?
A. Extinction
B. Differential reinforcement of low rates
C. Response cost
D. Stimulus fading
Correct Answer: A. Extinction
Rationale: Extinction involves discontinuing the reinforcement that previously
maintained a behavior. Because screaming had produced attention, consistently
withholding attention removes the maintaining consequence. Response cost removes
earned reinforcers, while differential reinforcement provides reinforcement according
to another response requirement. Stimulus fading transfers control across antecedent
stimuli and does not directly discontinue behavioral reinforcement.
Question 5:
After attention is first withheld for a learner’s shouting, the learner shouts more loudly,
repeats the behavior rapidly, and begins kicking the desk. What is the most
appropriate interpretation?
,2026/2027
A. The functional assessment was necessarily incorrect
B. The behavior has contacted positive punishment
C. The intervention produced an extinction burst
D. The shouting has been permanently strengthened
Correct Answer: C. The intervention produced an extinction burst
Rationale: An extinction burst is a temporary increase in the frequency, intensity,
duration, or variability of behavior after reinforcement is withdrawn. It does not
automatically indicate intervention failure or an incorrect functional hypothesis. The
behavior has not contacted punishment because no suppressive consequence was
added. Consistent implementation is essential because providing reinforcement during
the burst may strengthen more severe responding.
Question 6:
A student raises a hand primarily when a particular instructor is present because that
instructor consistently calls on students who raise their hands. In this situation, the
instructor’s presence functions as:
A. An unconditioned stimulus
B. A discriminative stimulus
C. An abolishing operation
D. A conditioned punisher
Correct Answer: B. A discriminative stimulus
Rationale: A discriminative stimulus, or SD, signals that reinforcement is available
for a particular behavior. The instructor’s presence indicates that hand-raising is likely
to produce being called on. An abolishing operation changes the value of a reinforcer,
rather than signaling its availability. Unconditioned stimuli elicit reflexive responses,
and conditioned punishers decrease behavior through learned histories.
Question 7:
A therapist intends to use crackers as reinforcement. However, the learner has just
finished a large meal and shows little interest in earning crackers. Which concept best
explains the reduced effectiveness of the crackers?
A. Establishing operation
B. Abolishing operation
C. Stimulus discrimination
D. Response generalization
Correct Answer: B. Abolishing operation
Rationale: An abolishing operation decreases the current value of a reinforcer and
reduces behavior that previously produced it. Food satiation makes crackers less
, 2026/2027
reinforcing. An establishing operation would increase their value, such as food
deprivation. Stimulus discrimination concerns responding differently in the presence
of different cues, while response generalization involves the emergence of untrained
but functionally related responses.
Question 8:
A learner answers questions correctly only when the therapist points to the correct
picture. Which intervention change should receive the highest priority?
A. Increase the size of the pictures
B. Introduce response cost for errors
C. Systematically fade the pointing prompt
D. Replace the pictures with verbal instructions
Correct Answer: C. Systematically fade the pointing prompt
Rationale: The learner’s responding remains under prompt control rather than the
intended instructional stimulus. Systematic prompt fading transfers stimulus control to
natural cues and reduces prompt dependency. Making pictures larger may strengthen
reliance on irrelevant features. Response cost does not teach independent responding,
and replacing the materials may create another prompt rather than correcting the
stimulus-control problem.
Question 9:
A speech therapist reinforces any vocal sound resembling “ball.” Later, reinforcement
is provided only for “ba,” then “bal,” and finally the complete word “ball.” Which
teaching procedure is being used?
A. Chaining
B. Shaping
C. Stimulus fading
D. Differential reinforcement of low rates
Correct Answer: B. Shaping
Rationale: Shaping develops a new response by reinforcing successive
approximations toward a target behavior. Each increasingly accurate vocalization
receives reinforcement while earlier forms are no longer reinforced. Chaining links
already identifiable responses into a sequence. Stimulus fading changes antecedent
features, and differential reinforcement of low rates reduces the frequency of a
behavior without eliminating it.
Question 10:
BCBA Board Certified Behavior
Analyst Exam 2026/2027: Practice
Exams, Quizzes, and Answer
Explanations
Question 1:
A therapist gives a learner 30 seconds of tablet access immediately after the learner
independently requests a break. Across several sessions, independent break requests
increase. Which behavioral process most directly explains this change?
A. Positive reinforcement
B. Negative reinforcement
C. Positive punishment
D. Extinction
Correct Answer: A. Positive reinforcement
Rationale: Positive reinforcement occurs when a stimulus is added immediately after
a behavior and the behavior subsequently increases. Tablet access was presented after
the break request, and independent requesting became more frequent. Negative
reinforcement would require removal of an aversive stimulus. Punishment would
decrease behavior, while extinction would involve withholding previously available
reinforcement.
Question 2:
During difficult mathematics assignments, a student appropriately asks for assistance.
The teacher temporarily reduces the task difficulty, and the student begins requesting
help more consistently. Which process is operating?
A. Positive punishment
B. Negative punishment
C. Negative reinforcement
D. Respondent conditioning
Correct Answer: C. Negative reinforcement
Rationale: The student’s help-seeking increases because an aversive condition—the
difficult task requirement—is reduced following the request. This is negative
reinforcement because something unpleasant is removed or reduced and the preceding
behavior increases. Positive punishment adds a consequence to reduce behavior, while
negative punishment removes a preferred stimulus. Respondent conditioning involves
stimulus-stimulus associations rather than consequences.
,2026/2027
Question 3:
A child hits a sibling during a game. The parent immediately removes the child’s
gaming device for the remainder of the evening. Over several weeks, hitting decreases.
Which procedure is illustrated?
A. Negative reinforcement
B. Positive punishment
C. Negative punishment
D. Response extinction
Correct Answer: C. Negative punishment
Rationale: Negative punishment involves removing a valued stimulus following a
behavior to reduce that behavior’s future occurrence. The gaming device was
removed after hitting, and hitting decreased. Negative reinforcement also removes a
stimulus, but its purpose is to increase behavior. Positive punishment adds a
consequence, and extinction withholds the specific reinforcer that previously
maintained behavior.
Question 4:
A learner previously screamed because staff members provided attention. Staff
members begin consistently withholding attention following screaming, and the
behavior gradually decreases. Which intervention component is responsible for the
reduction?
A. Extinction
B. Differential reinforcement of low rates
C. Response cost
D. Stimulus fading
Correct Answer: A. Extinction
Rationale: Extinction involves discontinuing the reinforcement that previously
maintained a behavior. Because screaming had produced attention, consistently
withholding attention removes the maintaining consequence. Response cost removes
earned reinforcers, while differential reinforcement provides reinforcement according
to another response requirement. Stimulus fading transfers control across antecedent
stimuli and does not directly discontinue behavioral reinforcement.
Question 5:
After attention is first withheld for a learner’s shouting, the learner shouts more loudly,
repeats the behavior rapidly, and begins kicking the desk. What is the most
appropriate interpretation?
,2026/2027
A. The functional assessment was necessarily incorrect
B. The behavior has contacted positive punishment
C. The intervention produced an extinction burst
D. The shouting has been permanently strengthened
Correct Answer: C. The intervention produced an extinction burst
Rationale: An extinction burst is a temporary increase in the frequency, intensity,
duration, or variability of behavior after reinforcement is withdrawn. It does not
automatically indicate intervention failure or an incorrect functional hypothesis. The
behavior has not contacted punishment because no suppressive consequence was
added. Consistent implementation is essential because providing reinforcement during
the burst may strengthen more severe responding.
Question 6:
A student raises a hand primarily when a particular instructor is present because that
instructor consistently calls on students who raise their hands. In this situation, the
instructor’s presence functions as:
A. An unconditioned stimulus
B. A discriminative stimulus
C. An abolishing operation
D. A conditioned punisher
Correct Answer: B. A discriminative stimulus
Rationale: A discriminative stimulus, or SD, signals that reinforcement is available
for a particular behavior. The instructor’s presence indicates that hand-raising is likely
to produce being called on. An abolishing operation changes the value of a reinforcer,
rather than signaling its availability. Unconditioned stimuli elicit reflexive responses,
and conditioned punishers decrease behavior through learned histories.
Question 7:
A therapist intends to use crackers as reinforcement. However, the learner has just
finished a large meal and shows little interest in earning crackers. Which concept best
explains the reduced effectiveness of the crackers?
A. Establishing operation
B. Abolishing operation
C. Stimulus discrimination
D. Response generalization
Correct Answer: B. Abolishing operation
Rationale: An abolishing operation decreases the current value of a reinforcer and
reduces behavior that previously produced it. Food satiation makes crackers less
, 2026/2027
reinforcing. An establishing operation would increase their value, such as food
deprivation. Stimulus discrimination concerns responding differently in the presence
of different cues, while response generalization involves the emergence of untrained
but functionally related responses.
Question 8:
A learner answers questions correctly only when the therapist points to the correct
picture. Which intervention change should receive the highest priority?
A. Increase the size of the pictures
B. Introduce response cost for errors
C. Systematically fade the pointing prompt
D. Replace the pictures with verbal instructions
Correct Answer: C. Systematically fade the pointing prompt
Rationale: The learner’s responding remains under prompt control rather than the
intended instructional stimulus. Systematic prompt fading transfers stimulus control to
natural cues and reduces prompt dependency. Making pictures larger may strengthen
reliance on irrelevant features. Response cost does not teach independent responding,
and replacing the materials may create another prompt rather than correcting the
stimulus-control problem.
Question 9:
A speech therapist reinforces any vocal sound resembling “ball.” Later, reinforcement
is provided only for “ba,” then “bal,” and finally the complete word “ball.” Which
teaching procedure is being used?
A. Chaining
B. Shaping
C. Stimulus fading
D. Differential reinforcement of low rates
Correct Answer: B. Shaping
Rationale: Shaping develops a new response by reinforcing successive
approximations toward a target behavior. Each increasingly accurate vocalization
receives reinforcement while earlier forms are no longer reinforced. Chaining links
already identifiable responses into a sequence. Stimulus fading changes antecedent
features, and differential reinforcement of low rates reduces the frequency of a
behavior without eliminating it.
Question 10:
