COMD 674 ABA 2 PART TASK
TRAINER EXAM 2026 DETAILED
CORRECT ANSWERS WITH
RATIONALES CORRECT VERIFIED
ANSWERS 1 to 150 GRADE A+
MATERIAL | INSTANT DOWNLOAD |
100% PASS GUARANTEE
COMD 674: Applied Behavior Analysis Part-Task
Trainer Examination
1. When applying a part-task training protocol to instruct a
child with a severe speech-sound disorder to produce the
word "banana," the clinician breaks the target word into
isolated syllables (/bæ/, /næ/, /nə/). What type of task-
analysis chain is being engineered if the clinician requires
the client to independent master /bæ/ first while the
clinician provides full vocal models for the remaining
syllables?
A. Backward Chaining with Leap Ahead
B. Total-Task Presentation
C. Forward Chaining
D. Backward Chaining
Correct Answer: C. Rationale: Forward chaining
involves teaching the task steps in their natural
chronological order. The student is taught and required
to independently perform the first step of the chain to
mastery while the remaining steps are completed or
prompted by the clinician.
,2. A clinician utilizes a part-task training methodology to
teach a non-verbal child with autism to use an
augmentative and alternative communication (AAC)
device to mandate juice. According to verbal behavior
classifications, what specific verbal operant is being
trained?
A. Tact
B. Intraverbal
C. Echoic
D. Mand
Correct Answer: D. Rationale: A mand is a verbal
operant in which the speaker asks for what they want or
need, directly controlled by establishing operations
(motivating operations like thirst) and reinforced by the
specific item requested.
3. During an intervention session using a part-task trainer,
the clinician notes that the client successfully completes
the first three steps of a five-step communication chain
but routinely experiences a behavioral breakdown at step
four. What is the most appropriate immediate data-driven
modification?
A. Terminate the program completely and select an
entirely new alternative target.
B. Isolate step four, break it down into smaller
sub-steps, and provide focused part-task training
on that specific component.
C. Force the client to repeat the entire five-step chain from
the beginning without reinforcement.
D. Apply a high-rate differential reinforcement of
alternative behavior (DRA) schedule to step one.
Correct Answer: B. Rationale: When a behavioral
breakdown or plateau occurs at a specific link within a
task analysis, the clinician should conduct a sub-analysis
, of that step, partitioning it into smaller increments to
rebuild fluency before re-integrating it into the chain.
4. A speech-language pathologist is utilizing backward
chaining to teach an individual with a traumatic brain
injury (TBI) the steps of a telephone dialing sequence to
contact emergency services. What is the primary
operational advantage of backward chaining in this
scenario?
A. It allows the client to skip the final step of the sequence
entirely.
B. It eliminates the need for any establishing operations or
prompts.
C. The client always completes the final step of the
chain independently, leading directly to the
natural terminal reinforcer.
D. It requires less data tracking and administrative
overhead than forward chaining.
Correct Answer: C. Rationale: In backward
chaining, the clinician performs or prompts all initial
steps of the task until the final step is reached. The
student completes this final step independently, ensuring
that their independent action is immediately followed by
the natural terminal reinforcement of the task.
5. A clinician is engineering a part-task training protocol to
teach an adolescent with a developmental delay to use a
picture exchange communication system (PECS). The
clinician provides a primary reinforcer (an edible treat)
every single time the client successfully reaches for a
communication icon. What specific schedule of
reinforcement is being applied?
A. Variable Ratio 3 (VR3)
B. Fixed Interval 1-minute (FI1)
C. Continuous Reinforcement (FR1)
D. Variable Interval 30-seconds (VI30)
, Correct Answer: C. Rationale: Continuous
reinforcement (Fixed Ratio 1) involves reinforcing every
single occurrence of the target behavior. This is the
optimal schedule for acquiring new behaviors or
components during the initial phases of part-task
training.
6. According to standard behavior-analytic principles, what
is the fundamental difference between a part-task trainer
protocol and a total-task presentation protocol?
A. Part-task training can only be used for vocal behaviors,
while total-task can only be used for motor skills.
B. Part-task training isolates and trains individual
components or sub-steps of a chain to mastery,
whereas total-task training requires the learner to
attempt every step of the entire chain during every
trial.
C. Part-task training explicitly forbids the use of physical
prompts, while total-task training relies on them entirely.
D. There is zero difference, as both terms refer to the exact
same administrative template.
Correct Answer: B. Rationale: Total-task
presentation requires the learner to attempt all links of
the task analysis chain during each session, with
prompting provided for steps they cannot complete. Part-
task training systematically isolates specific segments to
build functional skill chains.
7. A child with a profound phonological processing delay is
being taught to produce the consonant cluster /st/ using a
part-task trainer. The clinician reinforces the production
of /s/ alone initially, then shifts the reinforcement criteria
to require /s/ followed immediately by a brief glottal stop,
and finally requires the full /st/ blend. What behavioral
process is being executed?
A. Extinction
TRAINER EXAM 2026 DETAILED
CORRECT ANSWERS WITH
RATIONALES CORRECT VERIFIED
ANSWERS 1 to 150 GRADE A+
MATERIAL | INSTANT DOWNLOAD |
100% PASS GUARANTEE
COMD 674: Applied Behavior Analysis Part-Task
Trainer Examination
1. When applying a part-task training protocol to instruct a
child with a severe speech-sound disorder to produce the
word "banana," the clinician breaks the target word into
isolated syllables (/bæ/, /næ/, /nə/). What type of task-
analysis chain is being engineered if the clinician requires
the client to independent master /bæ/ first while the
clinician provides full vocal models for the remaining
syllables?
A. Backward Chaining with Leap Ahead
B. Total-Task Presentation
C. Forward Chaining
D. Backward Chaining
Correct Answer: C. Rationale: Forward chaining
involves teaching the task steps in their natural
chronological order. The student is taught and required
to independently perform the first step of the chain to
mastery while the remaining steps are completed or
prompted by the clinician.
,2. A clinician utilizes a part-task training methodology to
teach a non-verbal child with autism to use an
augmentative and alternative communication (AAC)
device to mandate juice. According to verbal behavior
classifications, what specific verbal operant is being
trained?
A. Tact
B. Intraverbal
C. Echoic
D. Mand
Correct Answer: D. Rationale: A mand is a verbal
operant in which the speaker asks for what they want or
need, directly controlled by establishing operations
(motivating operations like thirst) and reinforced by the
specific item requested.
3. During an intervention session using a part-task trainer,
the clinician notes that the client successfully completes
the first three steps of a five-step communication chain
but routinely experiences a behavioral breakdown at step
four. What is the most appropriate immediate data-driven
modification?
A. Terminate the program completely and select an
entirely new alternative target.
B. Isolate step four, break it down into smaller
sub-steps, and provide focused part-task training
on that specific component.
C. Force the client to repeat the entire five-step chain from
the beginning without reinforcement.
D. Apply a high-rate differential reinforcement of
alternative behavior (DRA) schedule to step one.
Correct Answer: B. Rationale: When a behavioral
breakdown or plateau occurs at a specific link within a
task analysis, the clinician should conduct a sub-analysis
, of that step, partitioning it into smaller increments to
rebuild fluency before re-integrating it into the chain.
4. A speech-language pathologist is utilizing backward
chaining to teach an individual with a traumatic brain
injury (TBI) the steps of a telephone dialing sequence to
contact emergency services. What is the primary
operational advantage of backward chaining in this
scenario?
A. It allows the client to skip the final step of the sequence
entirely.
B. It eliminates the need for any establishing operations or
prompts.
C. The client always completes the final step of the
chain independently, leading directly to the
natural terminal reinforcer.
D. It requires less data tracking and administrative
overhead than forward chaining.
Correct Answer: C. Rationale: In backward
chaining, the clinician performs or prompts all initial
steps of the task until the final step is reached. The
student completes this final step independently, ensuring
that their independent action is immediately followed by
the natural terminal reinforcement of the task.
5. A clinician is engineering a part-task training protocol to
teach an adolescent with a developmental delay to use a
picture exchange communication system (PECS). The
clinician provides a primary reinforcer (an edible treat)
every single time the client successfully reaches for a
communication icon. What specific schedule of
reinforcement is being applied?
A. Variable Ratio 3 (VR3)
B. Fixed Interval 1-minute (FI1)
C. Continuous Reinforcement (FR1)
D. Variable Interval 30-seconds (VI30)
, Correct Answer: C. Rationale: Continuous
reinforcement (Fixed Ratio 1) involves reinforcing every
single occurrence of the target behavior. This is the
optimal schedule for acquiring new behaviors or
components during the initial phases of part-task
training.
6. According to standard behavior-analytic principles, what
is the fundamental difference between a part-task trainer
protocol and a total-task presentation protocol?
A. Part-task training can only be used for vocal behaviors,
while total-task can only be used for motor skills.
B. Part-task training isolates and trains individual
components or sub-steps of a chain to mastery,
whereas total-task training requires the learner to
attempt every step of the entire chain during every
trial.
C. Part-task training explicitly forbids the use of physical
prompts, while total-task training relies on them entirely.
D. There is zero difference, as both terms refer to the exact
same administrative template.
Correct Answer: B. Rationale: Total-task
presentation requires the learner to attempt all links of
the task analysis chain during each session, with
prompting provided for steps they cannot complete. Part-
task training systematically isolates specific segments to
build functional skill chains.
7. A child with a profound phonological processing delay is
being taught to produce the consonant cluster /st/ using a
part-task trainer. The clinician reinforces the production
of /s/ alone initially, then shifts the reinforcement criteria
to require /s/ followed immediately by a brief glottal stop,
and finally requires the full /st/ blend. What behavioral
process is being executed?
A. Extinction
