I've got one that has a lot of citations that will probably help you. Note, however, that a lot of research on spanking specifically talks about 'excessive' corporal punishment.
The other thing to show is that non-corporal punishment is just as effective (if not more so). Sorry no references for that.
Walsh, Wendy. (2002). Spankers and Nonspankers: Where They Get Information on Spanking. Family Relations. 51(1), 81-88.
"A growing body of literature on spanking has focused on the potential harmful effects of corporal punishment and its ineffectiveness as a child behavior management tool. Some of the potential harmful effects of frequent and severe spankings include subsequent antisocial behavior of children (Grusec & Goodnow, 1994; McCord, 1991; Straus, Sugarman, & Giles-Sims, 1997). Some research indicates that the effects are small and vary by age of child and ethnicity (Deater-Deckard, Dodge, Bates, & Pettit, 1996; Larzelere, 1996). The excessive use of corporal punishment has been associated with a number of adult social and psychological problems, including physical aggression, delinquency, and depression (Foglia, 1997; Straus, 1994; Swinford, Demaris, Cernkovick, & Giordano, 2000). In addition, physical punishments give children pain and may teach them it is all right to inflict pain on others (McCord, 1996).” (p. 81)
So, look up those references too.alues.
