For basic tasks, i.e., finger, wrist and circling movements, rapid learning with no significant differences between both hands already in the second session was observed. For complex tasks, i.e., writing a sentence and copying a text, training participants’ left‐hand writing skills significantly increased over 18 months demonstrating the programs’ effectiveness. However, training participants did not reach innate left‐handers handwriting proficiency for complex tasks within two years. The underlying reasons may include a non-optimal training program, irreversible neural changes during conversion in childhood or an age‐related decline of motor learning capacity, among other factors.
The study was conducted In collaboration with the ‘First German Consulting and Information Center for Left-handers and Converted Left-handers’.
Stetter, L., Sattler, J. B., Marquardt, C., & Hermsdörfer, J. (2023). Handwriting kinematics during learning to write with the dominant left hand in converted left-handers. Scientific Reports (13). doi.org/10.1038/s41598-023-28911-7