Clinical Observations of Motor
nd
and Postural Skills- 2 Edition
(COMPS-2)
Becca Price & Shelby Berthelot
Purpose
• Performance based screening test
• Descriptive measure that helps identify presence of
motor problems with a postural component
• Helps identify if additional assessments need to be
performed
• Determine type of intervention approach to use
• Children ages 5-15
Items
• 6 items:
Slow Movements
Rapid Forearm Rotation
Finger-Nose Touching
Prone Extension Posture
Asymmetrical Tonic Neck Reflex
Supine Flexion Posture
Testing Procedures
• Recommended to perform 6 tasks in order
• Last 3 tasks must be performed in order
• Use standardized methods and exact
wording in bold
• Therapist performs task first then instructs
them to imitate
Test Development and Standardization
• Initial Test
– Went from 19 items to 6
– Used by experienced pediatric Ots in 2 cities
– 123 children age 5 to 9.11 , 67 with DCD and
56 with no know motor problem
• Upward age extension
– 261 children between age 10-16
Psychometric Properties
Reliability:
Test-Retest = .92
Interrater
• (4 different raters) = .87
Internal Consistency = .75
• Age 5- 9.11 = .77
• Age 10- 15.11 = .69
Validity:
Content- established by expert
opinion
Construct- empirical item analysis
Test Sensitivity:
100% for ages 5,8,9
82% for ages 6 & 7
Low percentage for ages >9.11
Criterion
Concurrent- BOTMP subtests,
Developmental Coordination
Disorder Questionaire
Predictive- Correctly classified ~
80% of the time
Test Length and Cost
• Takes about 15-20 minutes to
administer and score
• Cost:
– Manual = $36
– Score Sheets = $18 for 20 sheets
– Therapro.com
Scoring
Test Results
• Less than a 0 indicates problems in motor and
postural skills
• Greater than a 0 indicates normal functioning in
motor and postural skills
• A weighted score is given for each of the 6 items
and a weighted total score is given
Areas of Occupation Addressed
• Play
• Functional Mobility
Assessment Approach
• Bottom up
– Tests the different components of motor control
– Measures:
•
•
•
•
•
•
Move slowly and symmetrically
Cerebellar-vestibular integrity
Cerebellar coordination
Vestibular-proprioceptive processing dysfunction
Degree of ATNR present
Somato-dyspraxia
Where the Tool is Used
• Rehabilitation Clinic/ Health Care setting
• Education Setting
• Private Pediatric Clinic
Frame of Reference
• Motor control
– Movement disorder
– Postural stability
– Motor coordination
Measurement Concerns
• The assessment does not take into
consideration children who have neurological or
neuromotor problems, such as cerebral palsy or
epilepsy.
• The results do not return normative data in the
way of age equivalence.
• The assessment is not meant to measure
change in motor function over time.
References
• Clinical Observations of Motor and Postural Skills: 2nd Edition
(COMPS). (2012, January 1). Retrieved May 30, 2014, from
http://www.therapro.com/Clinical-Observations-of-Motor-andPostural-Skills-2nd-Edition-COMPS-P7628.aspx
• Wilson, B., et al. (1992). Reliability and construct validity of the
clinical observations of motor and postural skills. The
American Journal of Occupational Therapy, 46(9), 775-783
• Wilson, B., Pollock, N., Kaplan, B., & Law, M. (2000). Clinical
Obervations of Motor and Postural Skills (COMPS-2) ( 2nd ed.).
Framingham, MA: Therapro, Inc.