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¶

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

Subclaims¶

q2 i? Poorer writers and children show much lower correlation between maximum speed and curvature than good writers, and tend to slow down relative to increases in radial length. → 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

Same photographic-analysis experiment. The article interprets good writers' closer approach to constant stroke time as a marked tendency toward temporal rhythm, while noting the regression line indicated a curved rather than straight-line relationship.

"The poorer writers and children show very much lower correlation between the maximum speed and curvature of the arc than do the good writers and also exhibit a more marked tendency to slow down the speed relative to the increase of the radial length of the arc."

Discussion¶

Learner Variables¶

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

Related Claims¶

• Better adult writers show slightly greater temporal regularity in handwriting strokes, with the total stroke period showing the least variability — related
• The experiment did not confirm that speed increase carries increased reading effectiveness within the same individual — related