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Developmental Assessment for Students with
Severe Disabilities – Third Edition

Mary Kay Dykes
Jane N. Erin


The DASH-3 is a criterion-referenced tool that measures specific skill levels in individuals of all ages who have severe and/or multiple physical/ sensory disabilities.

The scales are appropriate for individuals with:
  • Severe and profound intellectual disabilities (“mental retardation”)
  • Autism Spectrum Disorders
  • Mild to moderate disabilities
  • Single disabling conditions (e.g. visual impairment or paraplegia) Back to the top

Scales & Forms

  • Sensory-Motor 
  • Language 
  • Social-Emotional 
  • Activities of Daily Living Scale 
  • Academics

Cumulative Summary Sheet
Scores from up to three DASH-3 administrations can be recorded on this sheet. This summary sheet allows the examiner to quickly compare performance across each of the five scales, as well as to evaluate progress over time. This form also provides opportunity to estimate the individual’s overall developmental age level through by averaging the five scale scores.

Intervention Planning Worksheet
This form provides a basis for identifying skills most appropriate for intervention for up to three administrations of the DASH-3. It allows for easy identification of skills that could not be determined due to task resistance, skills performed independently, and skills that are considered priorities for intervention.

Comprehensive Program Record
 This form is used to document the individual’s ongoing progress in achieving targeted skills through recording of “performance level” data across weeks. This form provides the basis for making timely decisions regarding intervention for each targeted skill (e.g., changes regarding instructional strategies, adaptive supports). Back to the top


Mary Kay Dykes & Jane N. Erin

Age Range 6 months through adulthood

Qualification Level A

Format Handscored