High Probability Request Sequences¶

Strategy · All strategies
Evidence · no claims cited

Description¶

A high probability (high-p) request sequence is a behavioral technique in which the teacher delivers two to five brief requests the learner is highly likely to comply with ("Give me the red pencil," "Show me your name card"), then immediately follows with the low probability (low-p) target request — typically the academic task or transition the learner has been avoiding. The technique exploits behavioral momentum: compliance with easy requests increases the momentary probability of compliance with a subsequent, harder request. It is carried out in seconds, requires no materials, and is delivered conversationally during natural instruction.

Design Implications¶

High-p sequences apply the behavioral principle of response momentum: reinforcement earned for easy compliance briefly raises the probability of compliance with a related, more demanding response Behaviorism. The effect is strongest when the high-p requests are topographically or functionally related to the target request and when the interval between the last easy request and the target is short (a few seconds) [+M]. Praise or brief acknowledgment of each compliance sustains the momentum; skipping reinforcement for easy requests weakens the sequence [+M].

Context¶

Requirements¶

• Identification of a genuine low-p request — a task, transition, or instruction the learner reliably refuses or delays
• A repertoire of 3–5 quick, easy requests the learner complies with at or near 100% (verified by brief baseline observation)
• Rapid pacing: high-p requests delivered in quick succession, with brief acknowledgment of each compliance
• Immediate delivery of the target request within seconds of the final compliance

Constraints¶

• Effectiveness degrades sharply if the high-p requests are not truly easy for that learner; requests at even moderate difficulty break the momentum [-M]
• Overuse produces satiation — the easy requests lose their reinforcing value and compliance rates fall [-M]; sequences should be faded as target-task compliance grows
• The technique manages compliance in the moment but does not teach the underlying skill; without instruction on the target task itself, avoidance re-emerges [~M]
• If the target request remains aversive (too difficult, too long, or poorly scaffolded), momentum effects are short-lived [-M]; pair with Cognitive Load Management to reduce the task's actual difficulty

Implementation Variability¶

• Academic momentum: easy math facts or letter-naming items immediately before harder problem solving
• Transition support: quick compliance requests ("Hands on the table," "Look at me") before an activity change
• Peer-mediated and self-managed variants: learners deliver the sequence to peers or self-prompt through easy items first
• Fading: gradually thinning the number of high-p requests (5 → 3 → 1 → none) as target compliance stabilizes

Target Learners¶

• Young children and learners with developmental disabilities or emotional/behavioral disorders, for whom the largest compliance gains are documented [+S]
• Students exhibiting escape-maintained avoidance of specific academic tasks or transitions
• Whole-class use is possible but the technique is most validated for individual or small-group delivery with identified avoidance behavior [~M]

Target Learning Goals¶

• Behavioral: increasing compliance, task initiation, and on-task behavior during non-preferred activities
• Academic engagement: increasing attempts on difficult tasks long enough for instruction to occur
• Not a content-acquisition strategy — it creates the conditions under which Practice and instruction can happen

Instructions¶

1. Identify the low-p request — observe and confirm which instruction the learner avoids (e.g., "Start your writing worksheet").
2. Select high-p requests — choose 3–5 brief tasks the learner complies with nearly always, ideally related to the target (e.g., "Write your name," "Copy this word").
3. Deliver the sequence — issue high-p requests rapidly, acknowledging each compliance briefly ("Yes! Nice writing").
4. Deliver the target request — within seconds of the last compliance, issue the low-p request in the same calm tone.
5. Reinforce target compliance — deliver meaningful praise or a preferred outcome immediately after compliance with the target request.
6. Fade — reduce the number of high-p requests as target-task compliance becomes consistent, and check in on progress (Check-In).

Related Strategies¶

• Direct Instruction — high-p sequences create the compliance conditions that explicit, teacher-led instruction requires
• Precorrection — a complementary antecedent strategy; precorrection prompts the expected behavior, high-p sequences build momentum toward it
• Behavior-Specific Praise — the acknowledgment component that sustains momentum across the sequence

Examples¶

• Early literacy small group: before asking a reluctant reader to read a passage aloud, the teacher asks the student to point to the title, read a known sight word, and echo-read one sentence — then hands over the passage.
• Transition routine (special education): a student who resists lining up is asked to "push in your chair," "grab your card," and "stand up" before the "line up" instruction; documented in the behavioral momentum literature (e.g., Davis, Brady, & Hamilton, 1992).
• Math fluency warm-up: three rapid single-digit fact probes immediately before introducing multi-step word problems, so the student begins the harder work already in a compliant, successful rhythm.

Key Sources¶

• Davis, C. A., Brady, M. P., Hamilton, R., McEvoy, M. A., & Williams, R. E. (1994). Effects of high-probability requests on student latency to and accuracy of responses to academic tasks. Journal of Behavioral Education, 4(1), 57–74.
• Nevin, J. A., Mandell, C., & Atak, J. R. (1983). The analysis of behavioral momentum. Journal of the Experimental Analysis of Behavior, 39(1), 49–59. doi:10.1901/jeab.1983.39-49
• Belfiore, P. J., Lee, D. L., Vargas, A. U., & Skinner, C. H. (2007). Effects of high-probability request schedules on the performance of young children with severe developmental delays. Journal of Applied Behavior Analysis, 40(3), 503–507.
• Cooper, J. O., Heron, T. E., & Heward, W. L. (2020). Applied behavior analysis (3rd ed.). Pearson.