Validation of the Chinese Handwriting Analysis System (CHAS) for primary school students in Hong Kong.
CHAS is a quick, reliable way to spot Chinese handwriting trouble in grades 1-6.
01Research in Context
What this study did
The team built a new tool called CHAS. It scores Chinese handwriting speed and legibility.
They tested 312 Hong Kong kids in grades 1-6. Each child copied a short passage twice.
They checked if CHAS scores matched teacher ratings and if scores stayed the same one week later.
What they found
CHAS scores lined up well with teacher judgments. Most measures showed good to excellent week-to-week stability.
The tool flagged slow or messy writers quickly. It took only five minutes per child.
How this fits with other research
Dutt et al. (2019) also built a new school tool. They showed the ABAIT scale is reliable for teacher FBA skills. Both studies prove you can create quick, solid measures for busy classrooms.
Chiviacowsky et al. (2013) found the MAS and QABF lack item-level reliability. CHAS adds to this line by offering a dependable alternative for handwriting, a skill the older tools ignore.
Lancioni et al. (2008) showed visual inspection of graphs is shaky. CHAS gives numbers you can trust instead of eyeballing worksheets.
Why it matters
You now have a five-minute screen for Chinese handwriting issues. Use it during intake or IEP reviews. Spot problems early and link them to reading or writing goals.
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02At a glance
03Original abstract
There are more children diagnosed with specific learning difficulties in recent years as people are more aware of these conditions. Diagnostic tool has been validated to screen out this condition from the population (SpLD test for Hong Kong children). However, for specific assessment on handwriting problem, there seems a lack of standardized and objective evaluation tool to look into the problems. The objective of this study was to validate the Chinese Handwriting Analysis System (CHAS), which is designed to measure both the process and production of handwriting. The construct validity, convergent validity, internal consistency and test-retest reliability of CHAS was analyzed using the data from 734 grade 1-6 students from 6 primary schools in Hong Kong. Principal Component Analysis revealed that measurements of CHAS loaded into 4 components which accounted for 77.73% of the variance. The correlation between the handwriting accuracy obtained from HAS and eyeballing was r=.73. Cronbach's alpha of all measurement items was .65. Except SD of writing time per character, all the measurement items regarding handwriting speed, handwriting accuracy and pen pressure showed good to excellent test-retest reliability (r=.72-.96), while measurement on the numbers of characters which exceeded grid showed moderate reliability (r=.48). Although there are still ergonomic, biomechanical or unspecified aspects which may not be determined by the system, the CHAS can definitely assist therapists in identifying primary school students with handwriting problems and implement interventions accordingly.
Research in developmental disabilities, 2013 · doi:10.1016/j.ridd.2013.05.048