Physical punishment as a predictor of early cognitive development: Evidence from econometric approaches

Physical punishment and lifelong outcomes in low‑ and middle‑income countries: a systematic review and multilevel meta-analysis

Research from high-income countries has found negative outcomes associated with physical punishment. Yet, the extent to which such research evidence generalizes to children in low- and middle-income countries (LMICs) is largely unknown. The objective of the current pre-registered study (PROSPERO: CRD42022347346 ) was to conduct a meta-analysis of the associations between childhood physical punishment and individual outcomes in LMICs. We identified eligible articles by searching for keywords related to physical punishment in six languages across 11 databases, with search periods from April to August 2021 and June to July 2024. This process yielded 5,072 unique records, of which 189 studies, comprising 1,490 unique effect sizes and representing 92 LMICs, met our inclusion criteria. Findings from random-effects multilevel meta-analyses indicated that physical punishment was associated with detrimental outcomes, including mental health problems, worse parent-child relationships, substance use, impaired social-emotional development, negative academic outcomes and heightened externalizing behaviour problems, among others. Despite some variation by contextual and study-level characteristics, all subgroup estimates were consistent in direction. Sensitivity checks indicated that these findings were not typical of other non-violent methods of discipline but were specific to physical punishment and psychological aggression. The analysis confirmed that physical punishment is associated with detrimental outcomes for individuals in LMICs. Additional research is needed to inform the design, implementation, and evaluation of policies and interventions to prevent the physical punishment of children and adolescents worldwide.

The next 1000 days: building on early investments for the health and development of young children

Following the first 1000 days of life that span from conception to two years of age, the next 1000 days of a child's life from 2-5 years of age offer a window of opportunity to promote nurturing and caring environments, establish healthy behaviours, and build on early gains to sustain or improve trajectories of healthy development. This Series paper, the first of a two-paper Series on early childhood development and the next 1000 days, focuses on the transition to the next 1000 days of the life course, describes why this developmental period matters, identifies the environments of care, risks, and protective factors that shape children's development, estimates the number of children who receive adequate nurturing care, and examines whether current interventions are meeting children's needs. Paper 2 focuses on the cost of inaction and the implications of not investing in the next 1000 days. In low-income and middle-income countries (LMICs), only 62 million children aged 3 and 4 years (25·4%) currently receive adequate nurturing care during the next 1000 days, leaving 181·9 million children exposed to risks that jeopardise their healthy development. Inputs across nurturing care dimensions of health, nutrition, protection, responsive care, and learning vary substantially across countries. In LMICs, although 86·2% of children have a healthy weight in this period, less than one in three children have access to developmental stimulation or are protected from physical punishment, and only 38·8% have access to early childhood care and education services. Intervention research in LMICs in the next 1000 days is scarce. The continuity of developmentally appropriate nurturing care, coordination across health, education, and protection sectors, and the implementation of interventions to support caregivers and improve the quality of education and care remain top priorities in this period. These sectors play key roles in promoting quality early care and education for this age group, which will help maximise developmental potential and opportunities of children globally and help progress towards the achievement of the Sustainable Development Goals.

Corporal Punishment and Child Development in Low- and- Middle-Income Countries: Progress, Challenges, and Directions

Most studies and reviews of studies on the developmental consequences of corporal punishment have focused on samples from the U.S. and other high-income countries. This study conducted a rapid review of the literature on the associations between corporal punishment and children's cognitive and social-emotional development in low- and- middle-income countries (LMICs). Information from more than 42 studies of children younger than 18 years living in 64 LMICs was reviewed. Overall, the reviewed studies show associations between corporal punishment and negative cognitive and social-emotional outcomes, and there is no evidence that corporal punishment may relate to any positive developmental outcome in LMICs. Yet, issues of internal and external validity are common in the literature. The current evidence indicates that corporal punishment might increase the risk of detrimental child outcomes in LMICs, but further research with stronger methodological designs including samples from multiple settings is warranted.

Physical punishment and child, adolescent, and adult outcomes in low- and middle-income countries: protocol for systematic review and meta-analysis

BACKGROUND

Physical punishment at home and in schools is widespread around the world. Systematic reviews and meta-analyses have synthesized evidence, mostly from high-income countries (HICs), showing that physical punishment relates to multiple detrimental individual outcomes. Yet, less work has been done to synthesize the evidence on the association between physical punishment at home and schools and child, adolescent, and adult outcomes in low- and middle-income countries (LMICs), where more than 90% of children live and physical punishment is most socially normative and prevalent. In this manuscript, we present a protocol for a systematic review and meta-analysis on the characteristics of the research, associations, and variation in associations, between physical punishment at home and in schools and child, adolescent, and adult outcomes in LMICs.

METHODS

We will conduct a review of studies published in peer-reviewed journals using quantitative methods to assess the association between physical punishment in childhood and/or adolescence and individual outcomes in LMICs. We will search for studies in 10 different databases using keywords in English, Spanish, Portuguese, Arabic, and Chinese related to physical punishment. We will extract qualitative data from the studies and the statistics needed to transform all study-level effect sizes into standardized mean difference effect sizes. For the analyses, we will employ multi-level meta-analyses to use multiple effect sizes per study and leverage within-study variation as well as between study variation using moderation analysis. Besides the meta-analyses, we will also conduct a narrative synthesis of the findings.

DISCUSSION

The proposed systematic review and meta-analysis will provide timely evidence to inform global research, policy, and practice on the links between physical punishment and lifelong individual outcomes.

SYSTEMATIC REVIEW REGISTRATION

PROSPERO CRD42022347346.

Correlates of co-occurring physical child punishment and physical intimate partner violence in Colombia, Mexico and Peru

Background

Violent discipline of children and intimate partner violence (IPV) against women are global public health and human rights problems. To address calls for more evidence on intersections, this study aimed to expand knowledge about correlates of physical child punishment, physical IPV against women and their co-occurrence (both) in the same household. 

Methods

Using national, population-based survey datasets from Colombia, Mexico and Peru, multinomial logistic regressions examined correlates of three mutually exclusive patterns of violence in the household: physical child punishment (only), physical IPV ever (only) and co-occurrence (both), each compared with no violence, after adjusting for other factors. Logistic regression was used to analyse odds ratios of physical child punishment in households affected by IPV past year and before past year compared with never, after adjusting for other factors.

Results

In all countries, adjusted odds ratios (aOR) of co-occurrence were significantly higher among women with lower education, more than one child, a child aged 2–5, a partner who tried to socially isolate her, and a history of childhood violence (caregiver violence and/or IPV exposure). They were significantly lower among women who reported collaborative partnerships (joint decision-making and/or shared chores). Co-occurrence was also significantly correlated with a history of child marriage/early motherhood in Colombia and Mexico, partner’s excess drinking in Mexico and Peru, agreement that physical child punishment was necessary in Peru and partner’s history of childhood violence in Colombia and Mexico. Evidence of shared risk factors was strongest for social isolation and caregiver histories of childhood violence and of shared protective factors for collaborative partnership dynamics. In all countries, associations between physical child punishment and physical IPV remained significant after adjusting for other factors, suggesting that correlations could not be explained by shared risk factors alone.

Conclusions

These findings are consistent with several theories relevant for violence prevention: 1) more collaborative, gender equitable partnerships may protect both children and women from violence; 2) violence between intimate partners may ‘spill over’ into violence against children (as correlations could not be explained by shared risk factors alone); and 3) there appears to be strong evidence of intergenerational transmission of violence.

Parental Discipline and Early Childhood Development in Rural China

Children who are under the age of five in underdeveloped and developing countries, including China, exhibit developmental delays due to their exposure to risks such as impoverishment, deprived health conditions, parental punishment, neglect, and poor psychosocial stimulation. Adverse experiences during the formative years of life, such as harsh parental discipline, may put them at risk for poor physical and mental well-being. The aim of this research is to explore the pervasiveness and developmental outcomes of different forms of discipline practices in the underdeveloped rural areas of China. To do this, we used cross-sectional data on child–caregiver dyads from a large survey held in 22 poor counties in the QinBa Mountain Region. The sample included 1622 children aged 12–36 months. Partakers were requested to respond to a general survey on parenting which included basic demographic questions, the Ages and Stages Questionnaire: Social-Emotional (ASQ-SE), the Bayley Scales of Infant and Toddler Development (BSID-III), and questions on exposure of children to different discipline practices. Our findings from OLS estimates reveal that aversive discipline methods adversely affect cognitive, language, and socio-emotional development, whereas, non-aversive discipline practices have constructive effects on cognitive, language, and motor development of children.

Physical punishment, physical abuse, and child behavior problems in South Korea

BACKGROUND

Prior literature has demonstrated the associations of parental physical punishment with child behavior problems and increased risk of physical abuse. In South Korea, physical punishment is a common parenting practice. In 2021, legislative reforms eliminated legal grounds for parental physical punishment in South Korea. However, research on physical punishment, physical abuse, and child behavior problems in the Korean context is scarce.

OBJECTIVE

This study examined whether physical punishment and physical abuse have unique associations with child behavior problems and whether physical punishment is associated with increased exposure to physical abuse.

PARTICIPANTS AND SETTING

Data came from the 2010 Korean Child and Youth Panel Survey (KCYPS), a nationally representative sample of South Korean children who attended 1st grade in 2010. Our analyses were based on three waves of the KCYPS (N = 2,180).

METHODS

We employed fixed-effects regression to examine the associations of physical punishment and physical abuse with child behavior problems and the association of physical punishment with physical abuse after controlling for time-invariant characteristics.

RESULTS

Exposure to physical punishment and physical abuse was associated with higher levels of aggression, depression, and lower levels of academic behavior regulation. Physical punishment was associated with increased risk of physical abuse.

CONCLUSIONS

Our findings suggest that physical punishment is a risk for child behavior problems and physical abuse in South Korea. Child maltreatment prevention efforts should focus on shifting favorable social norms around physical punishment and promoting non-physical disciplinary practices.

Corporal punishment and early childhood development in 49 low- and middle-income countries

OBJECTIVE

To systematically assess the association between corporal punishment and young children's development in low- and middle-income countries (LMICs).

METHOD

Data for 69 population-based surveys from the Multiple Indicators Cluster Survey (MICS) were combined. The sample included 131,164 children aged 36-59 months living in 49 LMICs. The surveys included information about children's developmental status and exposure to corporal punishment in the prior month. Logistic models, random-effects meta-analysis, and moderation analysis were used to obtain pooled estimates and assess the extent to which the association between corporal punishment and child developmental outcomes varied across countries.

RESULTS

On average, children exposed to corporal punishment were about 24% (β = 0.76, 95% CI 0.72-0.80) less likely to be developmentally on track than children who were not exposed to corporal punishment. Challenges in social-emotional development may drive the association between child development and corporal punishment. Corporal punishment was not associated with any positive developmental outcome in any country. There was minor heterogeneity in the estimated associations, which was not explained by the extent to which corporal punishment was normative within countries.

CONCLUSIONS

All forms of corporal punishment - including spanking - are likely to be harmful to young children's development and wellbeing. Public education, legal prohibition of corporal punishment, and other efforts are needed to protect children from corporal punishment and promote their wellbeing, health, and development.

The effect of spanking on early social-emotional skills

Whether spanking is detrimental for social-emotional (SE) development remains controversial, mostly due to disputes around the internal and external validity of existing evidence. This study examined the effect of spanking on the SE development of Bhutanese children, using a national, longitudinal sample (N = 1377; M_age  = 50.5 months old; 50% girls). Following best-practice recommendations for mitigating issues of selection bias in observational developmental research, the study employed conservative methods (i.e., child fixed-effects and lagged-dependent variables) and robustness checks to assess the internal validity of estimates. Across approaches, spanking predicted reductions in SE skills of .09-.17 SD, even after controlling for all time-invariant confounders and baseline levels of SE skills. These findings strengthen the argument that spanking might be harmful to young children's SE development.

Multilevel ecological analysis of the predictors of spanking across 65 countries

OBJECTIVE

Ending violence against children is critical to promote the health and socioemotional development of children across the globe. To this end, the UNICEF and the WHO have called for the abolishment of spanking, which is the most pervasive form of physical violence against children worldwide. This study used an ecological perspective to examine micro-level and macro-level predictors of parental spanking across 65 countries.

PARTICIPANTS

Data came from the fourth and fifth rounds of the UNICEF Multiple Indicator Cluster Surveys, which were administered between 2009 and 2017 (N=613 861 households). We examined the predictors of spanking using multilevel logistic regression analysis.

RESULTS

Micro-level factors (ie, those observed at the familial level) were stronger predictors of spanking in comparison to macro-level factors (ie, those observed at the community and country level). Caregiver belief that children need physical punishment in order to be raised properly was the largest risk factor for spanking (OR=2.55, p<0.001). Older child age, the child being female, the head of the household having a secondary education or higher, and higher household wealth were protective factors against spanking, while a higher number of people living in the household was a risk factor for spanking. Living in an urban community was the only macro-level factor associated with spanking.

CONCLUSIONS

Intervention at the micro-level and macro-level are important to reduce violence against children across the globe.

Physical punishment and child outcomes: a narrative review of prospective studies

Physical punishment is increasingly viewed as a form of violence that harms children. This narrative review summarises the findings of 69 prospective longitudinal studies to inform practitioners and policy makers about physical punishment's outcomes. Our review identified seven key themes. First, physical punishment consistently predicts increases in child behaviour problems over time. Second, physical punishment is not associated with positive outcomes over time. Third, physical punishment increases the risk of involvement with child protective services. Fourth, the only evidence of children eliciting physical punishment is for externalising behaviour. Fifth, physical punishment predicts worsening behaviour over time in quasi-experimental studies. Sixth, associations between physical punishment and detrimental child outcomes are robust across child and parent characteristics. Finally, there is some evidence of a dose-response relationship. The consistency of these findings indicates that physical punishment is harmful to children and that policy remedies are warranted.

The effect of high school entrance exam reform on adolescents’ depressive symptoms in Taiwan: A closer look at gender differences

In the current study, we followed motivational theories and investigated whether granting junior high school students one more opportunity to take the high-stakes high school entrance exam alleviates students’ depressive symptoms, and whether the effect is comparable for adolescent boys and girls residing in Taiwan. We analyzed two longitudinal datasets (seventh to tenth grade) from two neighboring cohorts, in which one cohort could take the exam just once (i.e., the pre-reform cohort) and the other twice (i.e., the post-reform cohort). Using a lagged-dependent-variable difference-in-differences model to compare the level of depressive symptoms before and after the entrance exam for the two cohorts, the results revealed that the reform was associated with increases in the level of depressive symptoms for both boys and girls. Despite a higher level of depressive symptoms overall, adolescent girls in the post-reform cohort showed a slower increase in the level of depressive symptoms than boys.