Impaired visuo-motor sequence learning in Developmental Coordination Disorder.

Gheysen et al. (2011) watched kids with and without Developmental Coordination Disorder (DCD) play a computer game.

The game asked them to hit buttons as fast as they could when lights popped up.

Hidden inside the game was a repeating pattern of lights. No one told the kids the pattern was there.

Both groups got faster at hitting the buttons.

Only the typically-developing kids picked up the hidden pattern.

The DCD group learned the simple task but missed the repeating sequence, showing a motor-planning block.

Ben-Itzchak et al. (2020) saw the same thing with handwriting: kids with DCD could trace a new letter as fast as peers, but the skill stayed stuck to the practice sheet and did not move to blank paper.

Bo et al. (2013) explain why. Their review links these sequence and transfer problems to weak circuits in the cerebellum and basal ganglia.

Smits-Engelsman et al. (2018) give hope. Their meta-analysis shows large gains when therapy targets the exact deficit, like breaking sequences into tiny chunks and adding extra practice.

If a child with DCD masters single moves but freezes when steps must flow together, do not keep drilling the whole chain. Strip the chain into two-step mini-sequences, give blocked practice, then slowly merge them. Check transfer early: move from dotted lines to blank paper, or from therapy room to playground, so you catch the planning gap before it hides.