Massed vs distributed practice describes when comparable learning opportunities occur. Massed practice concentrates opportunities in one session or short period. Distributed practice spreads them across sessions or days. A useful comparison keeps the targets, total opportunities, prompts, consequences, supports, and mastery rule clear, then reports acquisition, maintenance, errors, time, calendar days, client preference, fatigue, access, and routine burden.
Define each practice schedule
State the calendar window, number of days, sessions per day, trials per session, total opportunities, target set, teaching procedure, and rest periods. The labels have little meaning without those units.
Use direct evidence narrowly
A three-child study taught tacts, textual responses, and intraverbals. Massed opportunities occurred on one day each week; distributed opportunities occurred across several days. Distributed practice was more efficient for all three participants in those conditions.
Keep the result bounded
A verbal-behavior review summarizes the same finding and calls for continued comparison of instructional formats. It does not establish that distributed practice wins for every learner, skill, dose, setting, or outcome.
Protect participation and access
The Ethics Code addresses client involvement, assent when applicable, assessment, risk, and evaluation. ASHA supports continual AAC access. Spacing cannot replace health, motor, sensory, communication, or schedule review.
A practical example
Mae receives 24 matching opportunities either in one 30-minute session or across four shorter days. Independent results are 14/24 and 18/24. Mae requests breaks twice in the massed session and once across distributed sessions. The team keeps accuracy, errors, time, days, and preference separate.
Questions families can use
What is held constant? How many trials occur per day? Are total opportunities equal? Is efficiency measured in trials, minutes, or days? How are fatigue, preference, and maintenance reported?
Sources
- Behavior Analyst Certification Board, BCBA Test Content Outline, 6th edition
- Haq and colleagues, Comparing the Effects of Massed and Distributed Practice on Skill Acquisition for Children With Autism
- DeSouza and colleagues, Empirical Application of Skinner's Verbal Behavior to Interventions for Children With Autism
- Ross and colleagues, Learner Preference Between Massed- and Alternating-Trial Sequencing
- Behavior Analyst Certification Board, Ethics Code for Behavior Analysts
- American Speech-Language-Hearing Association, Augmentative and Alternative Communication
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