21. The cerebellum is an additional area of the brain important for motor skills . 22. They may have poor motor skills and trouble regulating their emotions. 23. Growth and motor skills are affected, and mental retardation also occurs. 24. Williams syndrome is also marked by a delay in development of motor skills . 25. It teaches fine motor skills like whacking, aiming and not poking eyes out. 26. Posterior parietal cortex appears to be involved in learning motor skills . 27. You can't measure this _ children seem to have the same motor skills . 28. He had speech disabilities, motor skill problems, was hyperactive and had trouble concentrating, 29. Their niece has a gene disorder that impedes her speech and motor skills . 30. PSP affects motor skills including coordination and balance, vision and speech.