Berlin, L. J., Ispa, J. M., Fine, M. A., Malone, P. S., Brooks-Gunn, J., Brady- Smith, C., Ayoub, C., & Bay, Y. (2009). Correlates and Consequences of Spanking and Verbal Punishment for Low‐Income White, African American, and Mexican American Toddlers. Child Development, 80(5), 1403-1420. doi: 10.1111/j.1467-8624.2009.01341.x