Domain 03: Select and Manage Interventions

38% of the NBCOT exam · blueprint OTR examination content outline, January 2024

Short answer

Domain 03 is the largest domain at 38% of the OTR exam. It covers selecting and implementing interventions for a client-centred plan: occupations and activities, preparatory methods and tasks, education and training for clients and caregivers, advocacy, group interventions, adaptive equipment and assistive technology, orthotic fabrication and wearing schedules, environmental and home modification, and grading activities up or down in response to performance.

Why it matters on this exam

Nearly two in five scored items. If your study time is limited, this domain is where it belongs.

Key concepts

Occupation-based intervention: the occupation itself is the treatment, not a warm-up for it. Preparatory methods (modalities, ROM, orthotics) prepare for occupation and should not be the whole session.
Grading: change one variable at a time — weight, duration, complexity, positioning, cueing — so you know what caused the change.
Adaptive equipment matching: reacher, sock aid, long-handled sponge, built-up handles, universal cuff, rocker knife, one-handed techniques after hemiplegia; equipment must match both impairment and context.
Orthotics: resting hand, thumb spica, wrist cock-up, dynamic versus static progressive; wearing schedules and skin checks.
Positioning and safety: pressure relief, transfer techniques, precautions after joint replacement, cardiac and sternal precautions.
Caregiver education: teach-back, written and demonstrated instructions, and training in the environment where the task will happen.
Assistive technology and home modification: doorway widths, grab-bar placement, ramp slope, lighting and contrast for low vision.

Common mistakes

Filling a session with preparatory activity and never reaching the occupation.
Issuing equipment without training the caregiver in the environment where it will be used.

Worked example

A client with C6 tetraplegia wants to feed themselves. A universal cuff with a built-up-handle utensil uses the available tenodesis pattern; a standard fork with a wrist orthosis does not solve the grasp problem.

Original practice questions

Domain 03: Select and Manage InterventionsDifficulty 3/5

A client with C6 tetraplegia wants to feed themselves independently. Which equipment matches the available movement?

AA weighted utensil with a non-slip mat to reduce tremor during feeding
BA standard fork with a wrist cock-up orthosis to stabilise the wrist
CA universal cuff with a built-up-handle utensil, using tenodesis grasp
DA mobile arm support with a standard lightweight utensil and plate guard

Show answer and rationale

Correct: C. C6 provides wrist extension and tenodesis but no functional grasp, so a universal cuff holds the utensil for the client. A wrist orthosis blocks the very extension that tenodesis depends on.

B — Immobilising the wrist eliminates the tenodesis pattern the client relies on.
D — Mobile arm supports address proximal weakness, which is not the deficit at C6.
A — Weighted utensils address tremor, which is not the presenting problem.

Domain 03: Select and Manage InterventionsDifficulty 2/5

Which activity is an occupation-based intervention rather than a preparatory method?

APassive range of motion to the shoulder to maintain joint mobility
BApplying a moist heat pack to the forearm before a treatment session
CTen minutes of therapy-putty exercises to strengthen the finger flexors
DMaking a sandwich in the kitchen using the client's own adapted knife

Show answer and rationale

Correct: D. An occupation-based intervention uses the meaningful activity itself as the treatment. Putty, passive range of motion and modalities are preparatory methods that get the client ready for occupation.

C — Putty exercise is a preparatory method targeting a component.
A — Passive range of motion is preparatory and not client-directed occupation.
B — Thermal modalities prepare tissue rather than engage occupation.

Domain 03: Select and Manage InterventionsDifficulty 3/5

A client uses a wheelchair and cannot enter their bathroom. Which modification should the OTR evaluate first?

AWidening the doorway to the clear width a wheelchair requires
BReplacing the tub with a roll-in shower and a hand-held sprayer
CAdding a raised toilet seat to reduce the height of the transfer
DInstalling a vertical grab bar beside the toilet for transfer support

Show answer and rationale

Correct: A. If the wheelchair cannot pass the doorway, nothing inside the room can be used. Access precedes every in-room modification.

D — A grab bar is useless if the client cannot get into the room.
B — A roll-in shower is inaccessible behind a too-narrow doorway.
C — Seat height does not address the access barrier.

All 5 Domain 03: Select and Manage Interventions questions →

Tools for this topic

OTR and COTA pacing calculator — The OTR exam is 180 items in four hours and the COTA exam is 190 items in the same four hours. This works out the seconds per item for each, and tells you whether a practice attempt is ahead or behind at any point.

3 flashcards for Domain 03: Select and Manage Interventions

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Blueprint-mapped questions with full rationales for every choice.

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Primary references

Certification Exam Handbook (2025) — National Board for Certification in Occupational Therapy (NBCOT) · primary · retrieved 2026-09-22, verified 2026-09-22

Last reviewed: 2026-09-22Next review by: 2026-11-06Draft — pending editorial reviewHow we verify facts