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. Author manuscript; available in PMC: 2021 Mar 25.
Published in final edited form as: J Fam Psychol. 2016 Apr 7;30(4):453–469. doi: 10.1037/fam0000191

Table 3.

Effect Sizes for Studies That Reported Effect Sizes Separately for Spanking and Physical Abuse

Study Outcome Predictor d 95% Confidence interval Beneficial outcomes Detrimental outcomes

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Lau et al. (2003) child externalizing behavior problems spanking .15 −.30 .60
physical abuse .65 .19 1.10
Lau et al. (2005) child externalizing behavior problems spanking .19 .16 .22
physical abuse .33 .30 .37
Bugental, Martorell, and Barraza (2003) child mental health problems spanking 1.23 .77 1.69
physical abuse .40 −.21 1.01
Lau et al. (2003) child mental health problems spanking .42 −.03 .87
physical abuse .62 .17 1.07
Lau et al. (2003) child low self-esteem spanking .00 −.45 .45
physical abuse .37 −.08 .82
Fergusson et al. (2008) adult antisocial behavior spanking .45 .33 .57
physical abuse .25 .13 .37
Lynch et al. (2006) adult antisocial behavior spanking .10 .00 .20
physical abuse .51 .41 .62
Fergusson et al. (2008) adult mental health problems spanking .21 .09 .33
physical abuse .55 .43 .66
Miller-Perrin, Perrin, and Kocur (2009) adult mental health problems spanking .04 −.55 .63
physical abuse .58 −.01 1.17
Schweitzer, Zafar, Pavlicova, and Fallon (2011) adult mental health problems spanking 1.12 .38 1.86
physical abuse .96 .23 1.70
Overall spanking .25 .22 .27
physical abuse .38 .29 .41