Psychometric properties


The AHA measurement contains twenty-two items each scored with a four-point rating scale. The range of the sum scores is 22-88 points. A scaled score is obtained which is a conversion of the raw scores into a percentage, thus, the scaled scores range from 0-100. The 22 items describe different types of object-related actions of the assisting hand under the following headings: general use, arm use, grasp and release, fine motor adjustments, coordination and pace. The general meaning of the rating scale categories is: 4 = effective, 3 = somewhat effective, 2 = ineffective, 1 = does not do. Specific criteria describing behaviours within the categories for each item are defined in the manual.

For a full reference list see Publications

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