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The VPA™: Assessment & Clinical Reasoning — participation guide

4 contact hours · 0.4 AOTA CEUs · Module 1 — follow along, take notes, and complete the reflection prompts.

Module 1

Why Performance-Based Visual Assessment

Follow along

What this module covers

  • What a standard score misses
  • What an OT measures — and what we do not
  • Why performance-based measurement holds up

Key ideas

Capture these as you listen

  • Norm-referenced perceptual batteries answer a psychometric question; the referral usually asks a performance question. Both are legitimate. They are not interchangeable.
  • Standardized perceptual batteries systematically under-sample the oculomotor and near-point efficiency floor, which is why "visual perception WNL" so often coexists with a real Level 2 limiter.
  • The VPA™ trades the normative standard score for level-and-domain specificity that maps directly to intervention. Name that trade in your report before anyone else does.
  • Criterion-referenced results cannot establish an eligibility category. When a normative comparison is required, administer a norm-referenced instrument or refer.

Notes

My notes for this module

Reference figures

Keep these for practice

Screenshot — a standard score report vs. a VPA™ profile

Standard score report
Visual perception (total)92 · 30th %ile
Visual-motor integration88 · 21st %ile
Motor-reduced perception95 · 37th %ile

“Within normal limits.” No statement about copying from the board, near endurance, or output rate.

VPA™ domain profile
L1Acuity & sensory foundationincl. field & scanning
strong
L2Visual efficiency
limiting
L3Visual processing
emerging
L4Visual-motor integration
limiting
L5Functional integration
breaking down

Shape, not a single number: efficiency and output fall away while foundation holds.

A norm-referenced score answers “how does this student compare?”. A VPA™ profile answers “where in the visual performance chain does the school day break down?” Both are evidence; only one tells you what to change on Monday.

Photo — the referral in context

Copy from the boardRepeated far↔near shifts, place-holding, sustained saccades
Worksheet completionNear endurance, figure-ground on a dense page, line tracking
Silent reading blockFixation stability, convergence comfort over 20+ minutes
Chromebook workContrast/glare tolerance, scrolling scan, screen-to-paper shifts
Hallway & lunch transitionsPeripheral awareness, depth on stairs, moving-crowd scanning
Referrals arrive as behavior (“loses place”, “refuses writing”). Name the occupational demand first — the demand is what you assess and what you later document as educational relevance.

Apply it

Case prompt

A school psychologist tells you, "The perceptual testing came back average, so we can rule vision out." Write a two-sentence reply that names what the battery sampled, what it did not sample, and what you propose to do about it, without disparaging the instrument or the colleague.

Practice

Mini exercise

Write, in one sentence, the difference between "this student is at the 16th percentile for visual perception" and "this student loses the line during sustained silent reading after four minutes." Which sentence writes an accommodation?

Take it to work

Action step this week

Pull the last visual-perceptual report you wrote. Highlight every sentence that describes a score and every sentence that describes performance during an occupation. If the score sentences outnumber the performance sentences, you have found your revision target.