Motor Assessment Scale (MAS)


Motor Assessment Scale (MAS) Evaluation Summary

  What does the tool measure? Everyday motor functioning
  What types of clients can the tool be used for? Patients with stroke
  Is this a screening or assessment tool? Assessment
Time to administer Studies have reported administration times ranging from 15 to 60 minutes.
  Versions Upper Limb/Extremity Motor Assessment Scale (UL-MAS or UE-MAS); Modified Motor Assessment Scale (MMAS)
Other Languages English and Norwegian
Measurement Properties
  Reliability – No studies have examined the internal consistency of the MAS.
– Only 1 study has examined the test-rest reliability of the MAS, reporting excellent test-retest.
– No studies have examined the intra-rater reliability of the MAS.
– Out of 2 studies that examined the inter-rater reliability of the MAS, both reported excellent inter-rater (with the exception of the general tonus item, which demonstrated poor inter-rater reliability).

No formal content validation is available. Items and scoring options are based on observations of the improvement of a large number of patients.

Excellent correlations between the MAS and the Fugl-Meyer Assessment.

Excellent correlations between the MAS and Mobility items from the Mobility Scale for Acute Stroke Patients and adequate correlations between the MAS and a simple measure of functional sitting balance (sitting arm raise and forward reach tests).

  Does the tool detect change in patients?

One study found minimal floor and ceiling effects for the UL-MAS in acute/subacute post-stroke patients. In another study, large floor and ceiling effects for Upper Arm Function and Hand Movements items and substantial floor effects for Advanced Hand Activities were found; however, the study has been criticized for inclusion of participants that were as long as 6 years post-stroke.

One study examined the ability of the MAS to detect change and found that the walking item had a large ability to detect change, and the arm items had a small ability to detect change.

  Acceptability The MAS is a fairly simple and short measure to administer. A proxy respondent is not appropriate for this performance-based measure. For severely affected patients or patients with aphasia, we recommend administering the Fugl-Meyer Assessment of Sensorimotor Recovery After Stroke (FMA) rather than the MAS.
Feasibility A short instruction and practice period is recommended prior to administering the test in a formal setting. A number of items are required as equipment for the MAS, however all items are readily available.
How to obtain the tool? The MAS is available for free and can be found in Carr et al. (1985). Click here to view a copy of the MAS.