title: [Preliminary evaluation of the effect of preschool activities on mental work capacity in 6-year-old children].
mesh_terms: D000367:Age Factors; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D002666:Psychology, Child; D011597:Psychomotor Performance / Q000502:physiology*; D014938:Work Capacity Evaluation
vernacular_title: Wstepna ocena wpływu zajeć w grupach przedszkolnych na dyspozycje do pracy dzieci 6-letnich.