3.1 Adult Neurological & Cognitive Assessments

Adult Neurological & Cognitive Assessments

Standardized assessments in adult neurological rehabilitation provide objective, reproducible baselines that establish functional prognosis, guide intervention selection, and inform discharge planning. The occupational therapist must synthesize screening data, performance-based functional cognitive observations, and sensorimotor metrics to determine how underlying neuroarchitectural deficits impair daily occupational performance.

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1. Cognitive Screening Instruments

Cognitive screens identify cognitive impairment and determine whether comprehensive neuropsychological testing or functional cognitive evaluation is warranted. While screens do not diagnose specific neuropathologies, their cutoffs dictate clinical referral pathways.

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2. Performance-Based Functional Cognitive Assessments

Screening tools assess discrete cognitive components in isolation. In contrast, performance-based assessments evaluate how cognitive impairments manifest during actual occupational performance in structured or naturalistic environments.

+---------------------------------------------------------------------------------------------------+
|                             ALLEN COGNITIVE LEVEL (ACL) CONTINUUM                                 |
+-------------------+--------------------+--------------------+--------------------+----------------+
| Level 1: Automatic| Level 2: Postural  | Level 3: Manual    | Level 4: Goal-     | Level 5:       | Level 6: Planned
| Actions (1.0-1.8) | Actions (2.0-2.8)  | Actions (3.0-3.8)  | Directed (4.0-4.8) | Exploratory    | Actions (6.0)
| • Reflexive       | • Gross motor      | • Repetitive motor | • Visual cues      | (5.0-5.8)      | • Anticipatory
| • Internal cues   | • Proprioceptive   | • Tactile cues     | • Familiar routines| • Trial-&-error| • Hypothetical
| • 24/7 total care | • 24/7 supervision | • 24/7 supervision | • Threshold 4.6    | • Impulsive    | • Independent
|                   | • Fall prevention  | • Setup for ADLs   |   for living alone | • Standby/check| • Conceptual
+-------------------+--------------------+--------------------+--------------------+----------------+

Allen Cognitive Level Screen (ACLS-5 / LACLS-5)

The Allen Cognitive Level Screen (ACLS-5) uses standardized leather lacing tasks to evaluate a client's learning potential, information-processing capacity, and ability to correct errors. The Large ACLS (LACLS-5) is indicated for clients with visual impairments or manual dexterity deficits.

1. Running Stitch (ACL Level 3):
   • Demonstrates grasp, manual manipulation of cord, and repetitive motor action.
   • Level 3 (Manual Actions): Client manipulates objects with hands in response to tactile cues. Actions are repetitive and lack goal-directed intent. Client cannot distinguish cause-and-effect and requires 24/7 supervision with complete setup for all basic ADLs.
2. Whipstitch & Error Correction (ACL Level 4):
   • Evaluates ability to follow visual cues and self-correct obvious errors.
   • The therapist introduces two standardized errors: a twisted cord and a cross-in-the-back error (cord crossed underneath the leather strip).
   • Level 4 (Goal-Directed Actions): Client recognizes tangible, visual goals and completes familiar routine steps. However, the client cannot recognize hidden errors, anticipate future consequences, or learn without direct visual demonstration. Level 4.6 is the established clinical threshold where a client may live alone with daily check-ins for medication management, safety, and finances.
3. Single Cordovan Stitch (ACL Level 5):
   • The client is instructed to look at the sample stitch and replicate it without verbal demonstration or physical modeling.
   • Evaluates inductive reasoning, deductive problem-solving, and trial-and-error experimentation.
   • Level 5 (Exploratory Actions): Client learns new skills through active physical trial-and-error. Thinking is concrete; client struggles with anticipation, long-term planning, and recognizing safety hazards before they occur. Requires standby supervision or periodic check-ins for novel or complex tasks.
4. Level 6 (Planned Actions):
   • Mental trial-and-error, deductive reasoning, and anticipatory planning without requiring physical experimentation. Fully independent.

Executive Function Performance Test (EFPT)

The EFPT assesses an individual's executive capacity and level of support needed across four standardized real-world IADL tasks:

1. Simple cooking (preparing instant oatmeal on a stovetop/microwave)
2. Telephone use (looking up a grocery store number and calling)
3. Medication management (organizing mock medication schedule and identifying interactions)
4. Bill paying (balancing a checkbook and paying two utility bills)

The therapist observes 5 executive components: Initiation, Organization, Sequencing, Safety and Judgment, and Task Completion. Scoring follows a strict, standardized cueing hierarchy where the client is given the least intrusive prompt first:

+--------------------------------------------------------------------------------+
|                       EFPT STANDARDIZED CUEING HIERARCHY                       |
+--------------------------------------------------------------------------------+
| Level 0: No Cues Needed (Independent performance)                              |
|    ↓                                                                           |
| Level 1: Indirect Verbal Guidance ("What should you check next?")              |
|    ↓                                                                           |
| Level 2: Gestural Guidance (Therapist points directly to the measuring cup)    |
|    ↓                                                                           |
| Level 3: Direct Verbal Assistance ("Turn off the stovetop burner now.")       |
|    ↓                                                                           |
| Level 4: Direct Physical Assistance (Therapist guides client's hand to dial)   |
|    ↓                                                                           |
| Level 5: Do for Participant (Therapist completes the step for the client)      |
+--------------------------------------------------------------------------------+

Additional Essential Functional Cognitive Batteries

• Kohlman Evaluation of Living Skills (KELS, 4th ed.): Assesses 17 items across 5 categories (Self-care, Safety & Health, Money Management, Transportation & Telephone, Work & Leisure). Most items are scored 0 (independent) or 1 (needs assistance), with half points available in the Work and Leisure section. A total score of 5½ or less indicates the client is capable of independent community living; a score above 5½ indicates the need for supportive living assistance.
• Assessment of Motor and Process Skills (AMPS): Client-centered observational assessment of 16 motor and 20 process skills during standardized, client-chosen ADL/IADL tasks. Uses many-facet Rasch analysis adjusting for task challenge and rater severity (requires formal training/certification).
• Rivermead Behavioural Memory Test (RBMT-3): Evaluates everyday functional memory (remembering appointments, names, routes, hidden personal belongings) to detect ecologically valid memory deficits.
• Arnadottir OT-ADL Neurobehavioral Evaluation (A-ONE): Standardized observation of basic ADL tasks (dressing, grooming, hygiene, feeding, transfers) that links functional execution breakdowns directly to cortical localized neurobehavioral dysfunction (ideomotor/ideational apraxia, unilateral spatial neglect, body scheme disorder, perseveration).

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3. Motor, Sensory, Visual, and Balance Batteries

Neurological damage profoundly impacts sensory processing, motor synergy control, balance, and spatial vision.

Visual Function and Perception

• Motor-Free Visual Perception Test (MVPT-4): Evaluates spatial relationships, visual discrimination, figure-ground, visual closure, and visual memory without requiring motor output (client points or gives verbal responses). Indicated when motor deficits (e.g., hemiplegia, ataxia) would confound visual-perceptual testing.
• Brain Injury Visual Assessment Battery for Adults (BiVABA): Comprehensive hierarchical battery evaluating visual acuity, contrast sensitivity, visual fields, oculomotor function, visual attention, and scanning patterns following stroke or TBI.

Sensorimotor & Dexterity Measures

• Fugl-Meyer Assessment of Upper Extremity (FMA-UE): Quantitative measure of motor recovery post-stroke based on Brunnstrom stages (max score 66 for upper extremity). Evaluates isolated joint movement outside of synergy patterns, reflexes, and coordination.
• Wolf Motor Function Test (WMFT): 17 timed and functional motor tasks measuring upper extremity motor ability and quality of movement during structured reaching, grasping, and lifting.
• Nine-Hole Peg Test (9-HPT) & Box and Block Test (BBT): Standardized, norm-referenced measures of finger dexterity and gross manual dexterity, respectively.

Sensory Evaluation: Semmes-Weinstein Monofilaments (SWMF)

Standardized sensory threshold testing using nylon monofilaments applied perpendicularly to the skin until the filament bows for 1.5 seconds:

Two-Point Discrimination (Static & Dynamic)

• Static Two-Point Discrimination (Dellon): Tests innervation density of slowly adapting mechanoreceptors (Merkel discs). Normal: ≤ 5 mm; Fair: 6–10 mm; Poor: 11–15 mm; Protective only: > 15 mm.
• Dynamic Two-Point Discrimination: Tests rapidly adapting mechanoreceptors (Meissner corpuscles). Applied moving distal to proximal along the fingertip. Normal: 2–3 mm; Fair: 4–6 mm.

Balance & Fall Risk: Berg Balance Scale (BBS)

• 14-item objective measure of static and dynamic balance (each scored 0–4; maximum score 56).
• Score < 45: Established clinical benchmark indicating high fall risk, requiring fall prevention interventions, environmental modifications, and assistive device prescription.