NBCOT OTR Domain 3 Practice Questions: Select and Manage Interventions
Domain 3 of 4 in the NBCOT OTR content outline · 38% of the exam, about 69 of 180 items
180 items across all four domains in 4 hours, with a score for Interventions so you know where you stand.
Free Interventions drillA client with a lower limb prosthesis is learning to put it on. What should the occupational therapist check for after wear?
Domain 3 on the NBCOT OTR exam
Domain 3, Select and Manage Interventions, is 38% of the NBCOT OTR exam, about 69 of 180 items and the largest domain. It covers the interventions an occupational therapist selects and carries out, from preparatory methods and modalities to occupation-based training, orthoses and prostheses, equipment and changes to the environment.
- Share of the exam
- 38% in the 2022 content outline, about 69 of the 180 items
- Our drill
- 10 questions from 173 Domain 3 questions, untimed, an explanation after every answer; one free attempt, unlimited with a pass

What the Domain 3 tasks cover
- Task 1: preparatory techniques and the intervention environment, wound management and skin integrity, superficial thermal agents, and deep thermal, mechanical and electrotherapeutic modalities
- Task 2: occupation-based strategies for ADL, IADL, health management, rest and sleep, education, work, play, leisure and social participation: grading, groups, cognitive and perceptual strategies, sensory approaches, joint protection, feeding, vocational services, transfers and wellness
- Task 3: grading exercise and conditioning, sensory and motor reeducation, pain, desensitization, edema and scar management, postural stability, balance, body mechanics and breathing
- Task 4: immobilization, mobilization and restriction orthoses, prostheses for upper and lower limb amputations, fabrication and fit, and training
- Task 5: seating and mobility, high- and low-tech assistive technology, community mobility and driving, and training in equipment use
- Task 6: environmental modifications, accessibility standards and legislation, ergonomics and universal design
Sit the full exam under the real clock
180 items across all four domains in 4 hours, with a score for Interventions so you know where you stand.
Free Interventions drillHow to study it
- Work by drill: modalities and wound care, ADL and cognition, exercise and neuro rehab, orthotics and prosthetics, and seating and home modification each have a ten-question drill.
- Learn contraindications as sets: heat, cold, ultrasound and electrical stimulation each have a short list that questions test directly.
- Know the fixed numbers: ADA ramp slope 1:12, 32-inch doors, a 60-inch turning circle, grab bars at 33 to 36 inches, wheelchair seat width hips plus about 2 inches.
- Take the Domain 3 drill, then the topic drill for your weakest area, until you score 80% or better.
Common questions
How many intervention questions are on the NBCOT OTR exam?
Domain 3 is 38% of the exam, about 69 of the 180 items, the largest domain.
Are orthotics on the NBCOT OTR exam?
Yes. Domain 3, Task 4 covers selecting, fabricating and modifying orthoses and training clients in orthotic and prosthetic devices.
180 items across all four domains in 4 hours, with a score for Interventions so you know where you stand.
Free Interventions drillThe other NBCOT OTR domains
Sources
- NBCOT: Foundations of the OTR and COTA certification exams (OTR item types, 180 items, 4 hours, scoring, field-test items)
- NBCOT: 2022 OTR Examination Content Outline
- NBCOT: 2022 Practice Analysis of the OTR (domain weights for exams from 2024)
- NBCOT: 2024 exam FAQs (scenario sets replace CST items from January 2, 2024)
- NBCOT: Fees
- NBCOT: Certification Examination Handbook (eligibility, breaks, results, retakes, StudyPack)
- NBCOT: Certification activities (2025 exams given and new-graduate pass rates)
- NBCOT: Practice tests (OTR practice tests and the scenario item practice test)
- NBCOT: Renewal Handbook (36 units every three years)
Original practice questions for exam preparation, written to the NBCOT 2022 OTR Examination Content Outline, not NBCOT exam questions. Independent practice, not affiliated with or endorsed by NBCOT (the National Board for Certification in Occupational Therapy) or Pearson VUE. OTR is a certification mark of NBCOT.