Abstract

Objective. The interrater reliability of the Peabody Developmental Motor Scales (PDMS) fine motor scale was examined in 23 children with developmental disabilities who were between 2 years and 5 years of age.

Method. Three occupational therapists viewed videotapes of the children and scored each child’s performance on the fine motor section of the test. Data were analyzed with the intraclass correlation (ICC) approach; ICC values ranged from 0.90 to 0.97 for the subskills of Grasping, Hand Use, Eye–Hand Coordination, and Manual Dexterity.

Results. The ICC interrater reliability value for the total fine motor score was 0.99. Reliability values were additionally computed with the PDMS fine motor scale age-equivalent scores and Z scores. The ICC values for these methods of scoring the PDMS were 0.99 and 1.00, respectively.

Conclusion. The PDMS fine motor scale can be used consistently to evaluate fine motor delays in this population of young children.

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