Playroom observations of activity level and sustained attention: two-year stability.
Milich
R
R
Loney
J
J
Roberts
M A
MA
D001288:Attention; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis*; D002648:Child; D006801:Humans; D008297:Male; D009043:Motor Activity; D010988:Play and Playthings; D012017:Referral and Consultation