Background/aim: Current handwriting assessment tools are standardised mostly on typically developing students. This study estimated the intrarater and interrater reliabilities of the adapted scoring criteria, titled the Minnesota Handwriting Assessment-Cerebral Palsy (MHA-CP), for evaluating the effectiveness of handwriting interventions for children with cerebral palsy.
Methods: We scored two batches of 20 random samples each from 80 handwriting samples produced by 30 children with cerebral palsy using the MHA-CP to estimate the intrarater and interrater reliabilities, respectively.
Results: Intraclass correlation coefficients exceeded 0.95 for both intrarater and interrater reliabilities for all quality subscales of the MHA-CP.
Conclusions: The MHA-CP is shown to be a reliable measure of the manuscript handwriting performance of children with cerebral palsy who are in Grades 1 and 2. Further empirical testing is recommended to confirm its validity as an outcome measure for this population.