A comprehensive 9-subtest battery that evaluates communication needs, trials real AAC devices, and generates a clinical-quality AAC evaluation report — all in one session.
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AAC Implications: Establishes eligibility context, current support baseline, and background for AAC recommendations.
Evaluator records the student's grade, date of birth, disability eligibility, and current AT or AAC tools in use before beginning the battery.
AAC Implications: Identifies need for switch access, scanning arrays, or alternative input methods such as head mouse or eye gaze.
Two-part task: switch scanning accuracy across timed trials and Fitts's Law grid target selection to measure speed and precision across different display densities.
AAC Implications: Informs AAC display density, symbol size, and visual complexity of the recommended device layout.
Student identifies and matches picture-based symbols across progressively larger icon grids. Determines the optimal number of visible symbols the student can reliably navigate.
AAC Implications: Guides vocabulary organization decisions — from single-word core boards to multi-symbol sentence-building systems.
Student sequences symbols to express a target idea, evaluating understanding of symbol order and early sentence structure as applied to AAC communication.
AAC Implications: Supports decisions about folder-based versus activity-based AAC page organization.
Student sorts picture symbols into conceptual groups across two rounds. This skill is foundational to navigating multi-page, category-organized AAC vocabulary systems.
AAC Implications: Measures functional communication proficiency with AAC navigation, informing the complexity of the recommended vocabulary system.
Student navigates a simulated multi-page AAC display to build target sentences by selecting core and fringe vocabulary symbols. Tracks page changes, steps, and self-corrections.
AAC Implications: Provides direct comparative data across AAC platforms to support an evidence-based device recommendation.
Evaluator administers up to 4 AAC applications — including Proloquo2Go, TouchChat HD, TD Snap, and more — and records structured observations on engagement, assistance level, and symbol navigation for each.
AAC Implications: Incorporates the student's voice into the AAC selection process, supporting motivation and long-term buy-in.
Student indicates their preferred AAC application with optional ratings for ease of use and enjoyment. Results are integrated directly into the clinical report narrative.
AAC Implications: Delivers a clinician-reviewed, IEP-ready AAC evaluation report with personalized recommendations.
Evaluator records clinical observations, access method recommendation, and follow-up steps. EvAAL then generates a comprehensive narrative AAC report automatically.
