. Childabuseincidenceand reporting by hospitals:significance of severity, class and race.Am.J. Public Health 75:56–6039. Hanson TL, McLanahan A, Thomson E.1995. Economic resources, parental prac-tices, and. Mother-infantinteractionsamonglower SES black,Cuban, Puerto Rican, and South Americanimmigrants. In Culture and Early Interac-tions, ed. TM Field, AM Sostck, P Vietze,PH Leiderman. Hillsdale,. in the child health and development literature.First and foremost is the lack of a standard set of control variables. Some re-searchers control for occupation, education level, and family structure,...