A major 2002 meta-analysis of 88 studies found associations between lawful corporal punishment by parents and ten negative outcomes, and a major 2016 meta-analysis, which used 75 studies published over 50 years, involving a total of 160,927 children, confirmed the findings of the earlier meta-analysis and found evidence of associations with five more negative outcomes.
The large and consistent body of evidence on the topic includes studies using sophisticated techniques which researchers have employed to address the arguments advanced by a few opponents of prohibition.
The body of evidence is now overwhelming – more than 250 studies show associations between corporal punishment and a wide range of negative outcomes, while no studies have found evidence of any benefits.
The met-analysis, which involved 88 studies, found associations between physical punishment and the following ten negative “behaviours and experiences”:
- poor moral internalisation (child is less likely to learn the intended lesson)
- poor quality of relationship between parent and child
- mental health problems in childhood
- aggression in childhood
- delinquent and antisocial behaviour in childhood
- child being a victim of “abuse”
- aggression and violence when adult
- criminal or anti-social behaviour when adult
- mental health problems when adult
- abusing child or spouse when adult
In 2016, Gershoff and Andrew Grogan-Kaylor published a second major meta-analysis, which used 75 studies published over 50 years, involving a total of 160,927 children.
It found associations between corporal punishment and 13 negative outcomes, confirming associations with all eight of the ten undesirable outcomes from the earlier meta-analysis which were covered and finding associations between corporal punishment and another five undesirable outcomes not included in the earlier meta-analysis:
- externalizing behaviour problems in childhood
- internalizing behaviour problems in childhood
- impaired cognitive activity in childhood
- low self-esteem in childhood
- holding positive attitudes about “spanking” as an adult
excerpted from:
Corporal Punishment by Parents and Associated Child Behaviors and Experiences
Corporal punishment of children: review of research on its impact and associations.Working paper, June 2016