Preventive intervention.
D002648:Child; D002656:Child Day Care Centers; D002657:Child Development; D002665:Child Psychiatry; D003142:Communication; D003479:Curriculum; D002658:Developmental Disabilities / Q000175:diagnosis; D005196:Family Therapy; D006801:Humans; D007223:Infant; D007804:Language Development; D007859:Learning Disabilities / Q000517:prevention & control*; D008960:Models, Psychological; D009034:Mother-Child Relations; D010553:Personality Development; D011203:Poverty; D012931:Social Environment; D012959:Socioeconomic Factors; D013663:Teaching