Better adult writers show slightly greater temporal regularity in handwriting strokes, with the total stroke period showing the least variability¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r1 · q2
Currency · newest study 1918 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Better adult writers maintain a slightly superior record of temporal regularity despite much overlapping with poor writers. → West 1918 q2 i? All groups show less relative variation when the total period is treated as a unit than for the stroke or rest periods. → West 1918

Evidence¶

West 1918¶

West, P. V. (1918). The Relation of Rhythm to the Handwriting Movement. The Journal of Educational Psychology. https://scholar.google.com/scholar?q=%22The+Relation+of+Rhythm+to+the+Handwriting+Movement%22

q2 · i? · causal · r1

First experiment using kymographic records via electric contacts, comparing adult and child groups of good and poor writers under finger and arm movement. The article notes "many cases of overlapping" and that better adult writers held "a slightly superior record of regularity."

"Although there are many cases of overlapping the better adult writers maintain a slightly superior record of regularity. The rhythmic reaction to the total period as a unit is quite noticeable, for all groups here show less relative variation than in either the stroke or rest."

West 1918 (2)¶

West, P. V. (1918). The Relation of Rhythm to the Handwriting Movement. The Journal of Educational Psychology. https://scholar.google.com/scholar?q=%22The+Relation+of+Rhythm+to+the+Handwriting+Movement%22

q2 · i? · causal · r1

Kymographic experiment with finger and arm movement, spontaneous and imposed rhythm conditions. Averages of variability from temporal uniformity were analyzed as percentage of variation within stroke, rest, and total stroke units.

"The rhythmic reaction to the total period as a unit is quite noticeable, for all groups here show less relative variation than in either the stroke or rest."

Discussion¶

Learner Variables¶

• Writing Skills — predictor: learners who differ on it differ in outcomes

Related Claims¶

• Better writers and older children anticipate the rhythmic beat while poorer writers and young children lag behind it; the arm is less accurate than the fingers except for younger children — related
• In good adult writers, maximum speed within an arc rises with radial length (Spearman rank correlation 0.96 across 33 segments), approaching a fixed limit; poorer writers and children show much lower correlation — related
• For habituated adult writers, following an imposed rhythmic beat increases temporal variation, with better writers adapting better than poor writers — related
• Handwriting shows family resemblances attributable to inheritance, with characteristic styles recurring within families — related