RBT Task Analysis and Chaining — Questions and Answers
Question 1: What is a task analysis in the context of ABA?
- A functional assessment that identifies the antecedents to a challenging behavior
- A preference assessment used to identify reinforcers for a learner
- The process of breaking a complex skill into a sequence of smaller, observable, teachable steps (Correct answer)
- A written report submitted to a supervisor after each session
Correct answer: The process of breaking a complex skill into a sequence of smaller, observable, teachable steps
A task analysis breaks a multi-step skill (e.g., handwashing, making a sandwich) into a series of discrete, observable steps that can be taught and measured individually, making complex skills achievable for learners who cannot acquire them all at once.
Question 2: In FORWARD chaining, where does teaching begin?
- The last step in the task analysis
- The most difficult step in the task analysis
- The first step in the task analysis (Correct answer)
- All steps are targeted simultaneously
Correct answer: The first step in the task analysis
Forward chaining teaches steps in order from first to last. The learner masters step 1 independently before step 2 is introduced. The therapist completes all remaining steps until the learner chains forward through the entire sequence.
Question 3: In BACKWARD chaining, which step does the learner initially learn to perform independently?
- The first step, with the therapist completing the rest
- The most frequently reinforced step
- The last step in the task analysis, with the therapist completing all prior steps (Correct answer)
- A randomly selected step based on difficulty
Correct answer: The last step in the task analysis, with the therapist completing all prior steps
In backward chaining, the therapist completes all steps up to the final one, and the learner is taught only the last step. This ensures the learner always experiences the natural reinforcer (task completion) immediately after their response, which is a key motivational advantage.
Question 4: Which chaining method involves the learner practicing the ENTIRE sequence during every teaching session, with prompts provided for any steps not yet mastered?
- Forward chaining
- Backward chaining
- Total task chaining (Correct answer)
- Interrupted chain procedure
Correct answer: Total task chaining
Total task chaining has the learner attempt every step in the task analysis during each trial, with the RBT providing prompts (as needed) for steps not yet performed independently. This approach maximizes exposure to the full chain and is often preferred for learners who can handle the entire sequence with support.
Question 5: Before selecting and implementing a chaining procedure, an RBT should first ensure that:
- A caregiver preference assessment has been conducted
- A baseline probe across all steps of the task analysis has been completed (Correct answer)
- The learner has mastered at least three prerequisite programs
- The BCBA has selected which reinforcers to use
Correct answer: A baseline probe across all steps of the task analysis has been completed
A baseline probe assesses which steps the learner can already perform independently before instruction begins. This data informs which chaining method to select, where to begin instruction, and provides a comparison point for measuring progress.
Question 6: Which of the following BEST describes what makes a task analysis step well-written?
- Steps are written broadly so the RBT has flexibility in how to implement them
- Steps are written in observable, measurable terms so all implementers apply them consistently (Correct answer)
- Steps should be combined to keep the total task analysis under 5 steps
- Steps reference the learner's diagnosis to explain why each is needed
Correct answer: Steps are written in observable, measurable terms so all implementers apply them consistently
Task analysis steps must be written in clear, observable, and measurable language so that any RBT implementing the program does so consistently, and so that data collected across implementers is reliable and comparable.
RBT Task Analysis and Chaining
What is a task analysis in the context of ABA?