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 Assessments — Motor

Structured Observations of Sensory Integration-Motor (SOSI-M)

Assess proprioceptive and vestibular processing, motor planning, and postural control

Authors: Erna Imperatore Blanche, PhD, OTR/L / Gustavo Reinoso, PhD, OTR/L / Dominique Blanche Kiefer, OTD, OTR/L

  • Individual Administration
  • Ages 5 through 14
  • Norm-Referenced
  • Testing Time: 20–40 Minutes
  • Administration Instructions in English and Spanish

SOSI-M Kit Image


The SOSI-M is a new nationally standardized assessment of sensory-based motor skills, based in Ayres Clinical Observations, and developed by well-regarded experts in sensory integration.

The SOSI-M includes 14 sets of administered items that assess proprioception, vestibular processing, motor planning, and postural control.

  1. Romberg (firm and soft surface, eyes open and closed)
  2. Heel to Toe (firm and soft surface, eyes open and closed)
  3. Standing on One Foot (eyes open and closed)
  4. Modified Postural Schilder’s Arm Extension Test
  5. Skipping
  6. Series of Jumps (jumping jacks; symmetric and reciprocal stride jumps)
  7. High Kneeling (right and left weight shift and reach)
  8. Antigravity Extension
  9. Antigravity Flexion
  10. Ocular Movements (vertical and horizontal)
  11. Slow Ramp Movements
  12. Sequential Finger Touching
  13. Diadochokinesis (right, left, and bilateral)
  14. Projected Actions in Time and Space (ball in the air and ball against the wall)

(Play Video)

Comprehensive Observations of Proprioception (COP-R)

In conjunction with the SOSI-M, the COP-R, a behavioral observation tool, was developed to provide essential information about a child’s proprioceptive processing. The COP-R is comprised of 18 items and compares a child’s observed skills to typical children their age. This tool provides information about the motor and behavioral skills linked to proprioceptive processing. It is one of the first tools to provide a systematic way to measure proprioception in a clinical setting.

SOSI-M kit includes: Administration Manual, Spanish Administration Manual, Quick Start Administration Guide, 25 Record Forms, 25 Comprehensive Observations of Proprioception (COP-R) Forms, one 15 cm and 20 cm square, tennis ball, pencil and pencil topper, and stopwatch. Tote bag and Airex foam mat also included.

PLEASE NOTE: SOSI-M is currently in production with an anticipated publication date in November, 2020.

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Available November 2020



Item No.




Publication/Shipping date Planned for 2020 SOSI-M Test Kit


See Also... (Sold Separately)


Item No. / Product Title



Quick Neurological Screening Test-3R (QNST-3R)



Visual Skills Appraisal-2 (VSA-2)



Test of Visual-Motor Skills-3 (TVMS-3)



Developmental Test of Visual-Motor Integration - 6 (VMI-6) (Beery VMI)



Goal-Oriented Assessment of Lifeskills



Sensory Processing Measure Preschool (SPM-P)


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