- Research article
- Open Access
Harsh discipline relates to internalizing problems and cognitive functioning: findings from a cross-sectional study with school children in Tanzania
BMC Psychiatry volume 16, Article number: 118 (2016)
Child maltreatment poses a risk to children and adolescents’ mental health and may also affect cognitive functioning. Also harsh discipline has been frequently associated with mental health problems. However, within societies in which harsh disciplinary methods are culturally normed and highly prevalent less is known about the association between harsh punishment, mental health problems, and cognitive functioning.
In a cross-sectional study, we conducted structured clinical interviews with a sample of Tanzanian primary school students assessing exposure to harsh discipline (Maltreatment and Abuse Chronology of Exposure), internalizing problems (Strength and Difficulties Questionnaire, Children’s Depression Inventory), and working memory (Corsi Blocktapping Task). School performance was measured by using the exam grades in 4 core subjects. The 409 children (52 % boys) had a mean age of 10.5 years (range: 6 – 15).
Using structural equation modeling, a strong relationship was found between harsh discipline and internalizing problems (β = .47), which were related to lower working memory capacity (β = −.17) and school performance (β = −.17).
The present study suggests that harsh discipline is closely linked to children’s internalizing mental health problems, which are in turn associated with lower cognitive functioning and school performance. Given the high rates of harsh discipline experienced by children in East African homes and elsewhere, the findings of the present study emphasize the need to inform the population at large about the potentially adverse consequences associated with harsh discipline.
In many countries worldwide, children are frequently exposed to harsh discipline such as spanking or being beaten with objects like sticks or belts [1, 2]. We define harsh discipline as the use of any physical or psychological force with the intention of causing physical or emotional pain for the purpose of correction or control of the child’s behavior. As physical and psychological discipline occasionally harms the child but poses at least a continuous threat or stressor to the child, harsh discipline is commonly defined as physical or emotional abuse . In Tanzania, a national survey with a representative sample of more than 3,700 youths between the ages of 13 and 24 revealed that almost three quarters of both girls and boys had experienced physical discipline (e.g., being punched, whipped, or kicked) and more than one quarter faced emotional violence (e.g., being insulted, humiliated, threat of abandonment) prior to the age of 18 . More than half of the girls and boys aged 13–17 years reported that they had experienced physical violence by either a relative or an authority figure during the past year. Concordantly, in a recent study with primary school students aged 6 to 15, it was found that nearly all children had experienced corporal punishment at some point during their lifetime in both family and school contexts . Half of the respondents reported having experienced corporal punishment within the last year. Furthermore, a study conducted at secondary schools showed that 40 % of the teachers reported the frequent use (defined as more than ten times a week) of physical discipline (e.g., beating with a stick) in school . Interviews with teachers and students confirmed that caning (i.e., being beaten with a stick) was the most frequently used disciplinary method in schools. Harsh discipline seems to be a very common phenomenon in Tanzania. However, little is known about the impact of harsh discipline on the children’s mental health, cognitive functioning and school performance in societies in which these disciplinary methods are commonly utilized.
Relation between harsh discipline, child abuse and mental health problems
Prior research, mostly from Western countries, showed that in addition to physical injury, child maltreatment is associated with a number of emotional and behavioral problems that begin in childhood but may last through adolescence and adulthood . Adverse effects of child abuse include depression, anxiety disorders, substance abuse, and aggressive or delinquent behavior [8–10]. Physical abuse, for example, contributed significantly to other risk factors in accounting for lifetime diagnoses of major depression, conduct disorder, and drug abuse [11, 12]. Corporal punishment also shows an association with psychopathology. Individuals who had experienced corporal punishment were at increased odds of psychopathology compared to those who had not experienced corporal punishment . Both cross-sectional and longitudinal studies suggested that corporal punishment is associated with increased externalizing and internalizing problems in childhood, adolescence and adulthood [14–18].
Psychological or emotional maltreatment also seems to be a potent form of maltreatment that has been linked with attachment disorders, developmental problems, aggression, and later psychopathology [19, 20]. For example, emotional abuse was associated with later symptoms of anxiety and depression  and parental verbal aggression with depression, anxiety and anger-hostility .
Harsh discipline, child abuse and its impact on cognitive functioning
Yet, child maltreatment is not only risk factors for mental health problems, it may also affect the cognitive functioning . For example, child abuse is related to delayed language and cognitive development, lower IQ and poorer school performance . A systematic review showed that teenagers exposed to child maltreatment performed more poorly than nonmaltreated controls on tasks assessing working memory, attention and executive functions . Augusti and Melinder  replicated this negative association between child maltreatment and working memory capacity. A number of studies reported not only an association of parental verbal abuse and emotional abuse with impaired spatial working memory performance but also with an alteration in the integrity of neural pathways, which seem to have implications for language development [27, 28].
Most studies investigating the link between child maltreatment and cognitive functioning have been conducted in children or adolescents who also reported mental health problems. Therefore, it is difficult to disentangle whether child maltreatment has a direct impact on cognitive functioning or whether it is mediated through mental health disorders . Deficits in executive functions and working memory seem to mediate the relationship between child abuse and lowered school performance . For example, physically abused children displayed an overwhelming set of problems on nearly all dimensions of school performance . However, less is known about the association between harsh punishment and cognitive functioning.
Internalizing problems seem to contribute to the prediction of school performance and cognitive functioning over and above the effects of intelligence . Overall, prior research findings indicated an association between child abuse and internalizing problems as well as between internalizing problems and cognitive dysfunctions. Therefore, internalizing problems may provide one route through which abused children are at heightened risk for impaired cognitive functioning and thus lowered school performance.
In Tanzania and other countries children are frequently exposed to harsh discipline, which may have detrimental consequences for their mental health and cognitive functioning. We have already demonstrated that corporal punishment was linked to children’s externalizing problems in Tanzanian children . Yet, in our work at Tanzanian schools and child care institutions it became obvious that mainly children with externalizing problem behavior were regarded as “problem children”, whereas caregiver and teachers did not notice or report internalizing problems of children. Therefore, in the present study we aimed at investigating more closely children’s internalizing problems and its association with harsh discipline, children’s working memory capacity and school performance in a sample of Tanzanian primary school students. We hypothesized that (a) exposure to harsh discipline would be related to internalizing problems, and cognitive dysfunctioning (i.e., lower school performance and working memory). We also predicted that (b) internalizing problems would be negatively associated with cognitive dysfunctioning. Furthermore, we expected (c) that internalizing problems would mediate the association between harsh discipline and cognitive dysfunctioning.
All children participating in this study were enrolled at one primary school in a town of approximately 150,000 inhabitants in southern Tanzania. We interviewed 409 children (52 % boys) in the 2nd to 7th year of formal schooling, with a mean age of 10.49 years (SD = 1.89, range: 6–15). The majority of the children lived together with their families. In total, 55 % (n = 227) of the children reported living together in one household with their mother and their father; 11 % (n = 46) with their mother but not their father; 3.6 % (n = 15) with their father but not their mother; 11 % (n = 46) with other relatives (e.g., grandparents, uncle, aunt etc.) but not their parents, 16 % (n = 65) lived in institutional care, and 2.5 % (n = 10) in foster families. In total, 18 % (n = 73) of the children reported that one parent had died and 3.9 % (n = 16) that both parents had died. This seems to be comparable to previous findings from Tanzania. For example, in 2009 25 % of the girls and 20 % of the boys were orphans .
The research team consisted of five German psychologists and seven Tanzanian psychologists and community workers. The interviewers were trained in interview skills, conducting interviews with children, and in the concepts of internalizing problems and working memory. They were also trained in the translation of the instruments from English to Swahili and the translation of the participants’ responses from Swahili to English for the German psychologists. The interviewers received instruction for these skills during a 2-week training session that included role-plays and interview observation. The project leaders were present throughout the entire training and data collection phases and supervised the research team throughout all stages of the study. The interviewers had standardized the form of assessment by conducting joint and double-rated interviews. In the total sample, 33 interviews were double-rated by two independent assessors to determine inter-rater reliability (see below). By following established international guidelines , all instruments were translated in written form to Swahili and were intensely discussed to guarantee a precise translation prior to data collection. A written, blind back-translation into English ensured valid and accurate translation. One of the authors (TH) speaks Swahili fluently and thus could ensure valid translation.
Before data collection we sent a letter and a written informed consent form to all parents or caregivers explaining the purpose of the study. The letter clarified that the participation of the children would be entirely voluntary, no monetary compensation would be offered, and invited them to call or meet the project leaders in case of additional questions. Approximately 80 % of the parents and caregivers signed the informed consent and sent it back. Every child was interviewed individually in a private setting. The children were assured that the interview was confidential and that they were free to end the interview at any time. The interviews each took 1.5 h on average.
All interviews were conducted in Swahili and administered as a structured interview. In this way, young children could also be interviewed using all instruments. The first part of the interview consisted of socio-demographic information including age, grade and sex.
Harsh punishment was measured using the Maltreatment and Abuse Chronology of Exposure - Pediatric Version (pediMACE; (Isele, Hecker, Hermenau, Elbert, Ruf-Leuschner, Moran, Teicher, and Schauer: Assessing exposure to adversities in children: The pediatric Maltreatment and Abuse Chronology of Exposure Interview, submitted)) . The pediMACE consists of 45 dichotomous (yes/no) questions, measuring witnessed or self-experienced types of child maltreatment throughout the lifetime with a particular focus on family violence. The pediMACE has been successfully validated with children in Tanzania (Isele et al.: Assessing exposure to adversities in children: The pediatric Maltreatment and Abuse Chronology of Exposure Interview, submitted). For our analyses, we included only the questions covering possible forms of harsh emotional and physical discipline by an adult person (e.g., parent, relative or caregiver) living in the same household (see Table 1). The interviewer rated the child’s report as never happened in life (0) or happened at least one time (1). For further analysis, we calculated separate scores for emotional and physical discipline by totaling up all of the relevant question responses. Four questions were related to physical discipline. Cohen’s k was > .99 (.99 – 1). On average the children reported exposure to M = 2.29 (SD = 1.07; range: 0 – 4) different forms of physical discipline. Emotional discipline was assessed with three questions. Cohen’s k was > .99 (.99 – 1). Participants have been exposed to M = 1.30 (SD = 0.74; range: 0 – 3) different forms of emotional discipline.
The self-evaluation of internalizing problems was assessed with the Strengths and Difficulties Questionnaire (SDQ) . The SDQ comes with good psychometric properties and has been utilized internationally . It has also been successfully implemented in Tanzanian settings [36, 37]. It consists of 25 statements with corresponding response categories of not true (0), somewhat true (1) or certainly true (2). In the present sample the Cronbach’s α was .67 and the Cohen’s k was .99 (.94 – 1). We focused on the subscales measuring internalizing problems: the peer problems scale and emotional symptoms scale. Both subscales have a possible range from 0 to 10. In the peer problem scale a score of 4 to 5 indicates an enhanced level of peer problems and a score higher than 5 an abnormal level. In the emotional symptoms scale a score of 6 indicates an enhanced level of emotional symptoms and a score higher than 6 an abnormal level.
Furthermore, we assessed the severity of depressive symptoms by means of the Children’s Depression Inventory (CDI) [38, 39]. The CDI is a reliable and well-tested clinical research instrument designed for school-aged children and adolescents. It has been successfully implemented in Tanzanian settings . It evaluates the severity of specific depressive symptoms and contains 27 items with three statements each and the child has to choose which statement fits best. For each item, the points range from 0 to 2, where higher values represent more clinically severe symptoms. In the present sample the Cronbach’s α was .70 and the Cohen’s k was .99 (.92 – 1). A cutoff point of 12 has been established as the ideal threshold discriminating children at risk of depression from nondepressed children [38, 40].
As measures of cognitive functioning we assessed school performance and working memory capacity. We chose school performance as one proxy for cognitive functioning as (1) it can be measured in the daily environment of the children, (2) it is an objective measure that is not influenced by the specific circumstances of the study and (3) it is an others-report measure. We assessed the school performance using the results of the midterm exams (0 – 100 %) in the four core subjects during the period of assessment: Mathematics, English, Swahili and Science. We received the results from the school administration. In order to control for possible influences by teachers, grade or dynamics within the classes, we z-standardized the grades within each class. The z-standardized scores ranged in the four main subjects as follows: English (range: −2.95 – 2.29), Mathematics (range: −2.80 – 2.92), Swahili (range: −3.40 – 1.81), and Science (range: −3.05 – 2.09).
Working memory capacity as a measure of cognitive functioning was used because (1) it was independent of the educational level and experience with technical equipment (e.g., computers, tablets or smartphones) of the students, (2) the assessment of working memory capacity includes other cognitive functions (e.g., attention and executive functions) and (3) it allowed a feasible and economic assessment of cognitive functioning in the context of a Tanzanian school. We measured working memory capacity with the Corsi Block-Tapping Task . It has been utilized as a measure of spatial memory in both clinical and experimental contexts for several decades, is the most important nonverbal task in neuropsychological research, and comes with good psychometric properties [42, 43]. The task requires the children to reproduce block-tapping sequences of increasing length in the same or in the reversed order and provides an index of working memory capacity. The Corsi apparatus consisted of nine 2.25 cm3 black, wooden blocks fixed to a 27.5 cm × 22.8 cm grey, wooden board. The blocks were cubes placed as described in the original test developed by Corsi . Each cube was numbered on one side so that the numbers were visible to the interviewer but not to the participant. The participant was seated in front of the interviewer, who subsequently tapped the blocks starting with a sequence of three blocks. Three trials were given per block sequence of the same length. The blocks were touched with the index finger at a rate of approximately 1 block per second with no pauses between the individual cubes. In the first application of the test after the first half of the interview the participant had to tap the block sequences in the same order immediately after the interviewer was finished. In the second application in the end of the interview the participants had to tap the block sequence in reversed order. We introduced the test as a game and used the following instruction: “My finger is a monkey and he will jump from tree to tree. When the monkey has finished jumping, I want you to follow the monkey in the same way.” In the second application, we used a slightly different instruction: “My finger is a monkey. He will jump from tree to tree but this time he has forgotten his way back. Can you show the monkey the way back?” We computed a total score for each application (same order and reversed order) by multiplying the memory span (length of the last sequence that has been correctly repeated twice) and the number of correctly repeated sequences until the test was discontinued (i.e., the number of correct trials). The total score ranged from 0 to 189. This score is more reliable than memory span alone . On average, the participants reported a total score on the first application (same order) of M = 37.50 (SD = 17.36, range: 0 – 105) and on the second application (reversed order) of M = 29.32 (SD = 18.70, range: 0 – 98).
We conducted SEM analyses applying maximum likelihood method of estimation ; in case of missing data, means and intercepts were estimated. As we aimed to test the association of harsh discipline with different outcome variables, we excluded all children (n = 21) from our SEMs who reported exposure to any form of sexual abuse in their home (measured with pediMACE). Furthermore, for logistical reasons, seven interviews could not be completed and five children did not participate in the mid-term exams.
Since we aimed to model the effects of different manifest variables on latent variables at a given level of generality, parceling items and the use of sum scores in the SEM is warranted . Goodness of fit was assessed using the following indices: chi-square (χ2); confirmatory fit index (CFI), with values greater than .95 indicating good fit; and root mean square error of approximation (RMSEA), with values less than .08 indicating reasonable fit [47, 48]. Akaike Information Criterion (AIC) is a comparative measure of fit. When comparing AIC values, exp((AIC min - AIC i )/2) can be interpreted as the relative probability that the ith model minimizes the (estimated) information loss . Preliminary analyses confirmed that all statistical assumptions (normality, linearity, collinearity, reliability and missing value analysis) for using SEM were met. Neither univariate nor multivariate outliers could be detected. All measurement models showed reasonable fit. Inter-correlations are displayed in Additional file 1: Table S1. Our metric for a small effect size was β ≥ .10, for a medium effect β ≥ .30, and for a large effect β ≥ .50 . Data was analyzed with IBM SPSS Statistics Version 21 for MAC and IBM SPSS Amos Version 21 for Windows.
In the peer problem scale the children showed, on average, a score of M = 2.09 (SD = 1.63; range: 0 – 8). In total, 15 % (n = 60) of the children showed an enhanced level of peer problems and 8 % (n = 33) an abnormal level. In the emotional symptoms scale the children showed on average a score of M = 3.19 (SD = 2.31; range: 0 – 10). In total, 9 % (n = 35) of the children showed an enhanced level of emotional symptoms and 9 % (n = 37) an abnormal level. Participants reported an average CDI score of M = 6.76 (SD = 4.57, range: 0 – 25). In total, 14 % (n = 57) of the children reported a CDI score of 12 or higher and thus were considered to be at risk of depression.
Associations between harsh punishment, internalizing problems and cognitive functions
In the first SEM, we tested the direct association between harsh discipline and internalizing problems, working memory as well as school performance. The results of the first SEM analysis indicated that the hypothesized model showed reasonable model fit (χ2[40, n = 388] = 69.32 (p = .003), RMSEA = .044 [90 %-CI = .025–.060, PClose = .718], CFI = .968, ACI = 143.32). All manifest variables loaded significantly on the latent variables (see Table 2). Harsh discipline correlated significantly with internalizing problems indicating a large effect. However, in contrast to our hypothesis harsh discipline was neither directly related to working memory nor to school performance. Working memory correlated positively with school performance indicating a medium effect.
In the second SEM, we tested the direct association between harsh discipline and children’s internalizing problems as well as the indirect association (via internalizing problems) between harsh discipline and working memory capacity as well as school performance. We decided not to include the direct paths from harsh discipline to working memory and school performance as these paths were not significant in Model 1. The results of the second SEM analysis indicated that the hypothesized model showed a good model fit (χ2[40, n = 388] = 59.03 (p = .027), RMSEA = .035 [90 %-CI = .012–.053, PClose = .909], CFI = .979, ACI = 133.03). When we compared the AIC values of both models, we found that Model 1 is 0.0058 times as probable as Model 2 to minimize the information loss. Hence, AIC indicated a better model fit for Model 2 compared to Model 1. All manifest variables loaded significantly on the latent variables (see Table 3). Harsh discipline correlated significantly with internalizing problems indicating a large effect. Furthermore, internalizing problems were negatively related to both working memory and school performance indicating in each case a small effect. Working memory correlated positively with school performance indicating a medium effect (see Fig. 1).
Our results indicated that 14 % of the participating students reported clinically relevant symptoms of depression in a common screening instrument (CDI). Using the SDQ 8 % respectively 9 % reported clinically relevant levels of peer problems (e.g., social withdrawal) and emotional problems. These numbers indicate that internalizing problems are also of relevance in Tanzanian primary school students though neither teachers nor caregivers reported internalizing problem behavior of children during the preparatory phase of our study. These findings may explain why so many parents, caregivers and teachers in Tanzania and elsewhere are convinced that harsh discipline does no harm to the children: Often the children suffer in silence and neither their parents, their caregivers nor their teachers notice the children’s suffering.
Harsh discipline may impair mental health across the entire lifespan . In line with this, we found a strong relationship between harsh discipline and internalizing problems. In turn, internalizing problems were related to lower working memory capacity and lower school performance. However, in contrast to our hypothesis the extent of harsh discipline was not directly linked to impaired working memory capacity and poor school performance. Our findings indicate that harsh discipline may not only be related to poor mental health but may also be associated with reduced cognitive functioning via internalizing mental health problems. Our results are in concordance with prior studies mostly from Western countries suggesting a relationship between exposure to child abuse, including harsh discipline, and internalizing problems [9, 22] and cognitive functions [27, 28]. However, it is not yet clear whether harsh discipline directly impacts cognitive functions or whether mental health problems mediate this relationship . The results of the present study suggest that internalizing problems may provide one route through which harshly disciplined children are at risk for both impaired memory functions and for lowered school performance.
The effect size of this association implies a small but marked influence. These results are congruent with previous research indicating a cumulative effect of harsh discipline on the children’s mental health problems [5, 14, 22]. Considering the high prevalence of harsh discipline in the current sample and other reports with representative samples [1, 2, 4], the consequences of harsh discipline may manifest into a considerable cause for concern at the societal level . Yet, further research is needed to thoroughly understand the causal mechanisms that may underlie the relationship between harsh discipline, mental health problems and cognitive deficits. Particularly, further studies that examine these relations across countries and societies in which harsh disciplinary methods are legal and highly prevalent using scientific rigorous designs are essential.
The findings of the present study emphasize the need to inform parents, caregivers, governmental organizations, and the population at large, especially in countries with a high prevalence rate of harsh discipline, about the potentially adverse consequences associated with harsh discipline. Thereby, it is important to raise awareness that children also suffer from internalizing problems (e.g., depressive symptoms, social withdrawal, etc.) helping parents, caregivers and teachers to be able to notice also a quiet child that suffers from mental health problems in order to break the vicious cycle that our results may indicate: Children suffer in silence, their suffering is not noticed but as a result of poor school performance these children may be even more likely to experience further harsh punishment.
Furthermore, our findings suggest that effective prevention of harsh discipline may be required to help to prevent children from developing mental health problems. Beside economic and environmental factors (e.g., poverty, high stress level, societal beliefs), reasons for using harsh disciplinary methods that parents and caregivers reported to researchers were, among others, a lack of non-violent caregiving skills, excessive demands, and helplessness . Lansford et al.  showed that parents’ positive evaluations of aggressive responses to hypothetical childrearing vignettes predicted parents’ self-reported harsh discipline in a study in nine countries. Thus, efforts to eliminate harsh discipline toward children could target parents’ beliefs about the acceptability of using harsh discipline. Hermenau et al.  successfully tested the feasibility of a preventative approach with caregivers in Tanzania that focused on caregivers’ beliefs, self-reflection of own experiences of harsh discipline, positive parenting skills, and nonviolent caregiving strategies. We recommend more research efforts that focus on developing and testing culturally appropriate prevention programs that effectively replace harsh discipline by forms of educational measures that do not harm the children.
There are some limitations of the study that should be noted: first, the cross-sectional study design does not allow for the establishment of causality. We cannot, for example, completely rule out the possibility that children who perform poorly at school experienced more harsh discipline and thus develop mental health issues. However, in our models we did not find a direct association between poor school performance and harsh discipline. The recruitment of study participants at one primary school limits the generalizability of our findings. In the school context of our data assessment we were unable to include parents’ reports for logistical reasons. Therefore, we could not gather information regarding the socio-economic status (SES) of our sample. It remains to be tested whether SES may impact cognitive functioning through other pathways than harsh discipline. Generally, the children talked very openly about their experiences and feelings. However, potential biases, such as social desirability, can never be completely ruled out for subjective reports. However, a recent study strengthened the credibility of children’s self-report by comparing epigenetic and self-report data and supported the conclusion that children are capable of accurately reporting their exposure to abuse . Furthermore, we did not assess the exposure to harsh discipline by teachers systematically. The exposure to harsh discipline in school may have further added to the impact of harsh discipline at home.
The present study suggests that harsh discipline is closely linked to children’s internalizing problems, which are in turn associated with lower cognitive functioning and school performance. Given the high rates of harsh discipline experienced by children in East African homes and elsewhere, the findings of the present study emphasize the need to inform the population at large about the potentially adverse consequences associated with harsh discipline. Further, our findings underscore the need to implement preventative measures against the use of these forms of discipline. Through these efforts, reducing harsh discipline in their home environments combined with the fostering of positive caregiving skills we would enable children to grow up in a respectful and supportive atmosphere, thereby strengthening their development.
Ethics and consent to participate
The Tanzanian Commission for Science and Technology and the Ethical Review Board of the University of Konstanz approved the study. Only children with an informed consent signed by their parents or caregivers were included in this study.
Consent to publish
Availability of data and materials
All data are fully available without restriction from the corresponding author.
Akaike information criterion
children’s depression inventory
confirmatory fit index
maltreatment and abuse chronology of exposure - pediatric version
root mean square error of approximation
strengths and difficulties questionnaire
structural equation model
statistical package for the social sciences
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We are grateful to all of the children who participated in this study. We also wish to thank all of the teachers, the head teacher and the director of the school for their support while conducting this study. We are very grateful to our highly motivated and reliable research team, including: Manswab Geho, Dorothea Isele, Huruma Kipagile, Getrude Mkinga, Andrew Mtitu, Zephania Ngowi, Lulu Nziku, Astrid Pabst, and Leila Samson. We are grateful to Anna Radkovsky for her statistical advice, Katharina Zepf and Justin Preston who critically reviewed the manuscript.
This research was supported by the Deutsche Forschungsgemeinschaft (DFG) and by the NGO vivo international. Neither vivo international nor the DFG influenced the design of the study and collection, analysis, and interpretation of data and the writing the manuscript in any possible way.
The authors declare that they have no competing interests.
TH participated in the conception and design of the study, collected data, performed the statistical analyses and interpretation of findings, and drafted the manuscript. KH participated in the conception and design of the study, collected data, performed the statistical analyses and interpretation of findings, and helped to draft the manuscript. CS collected data, supported the statistical analyses, and revised the manuscript. MT made substantial contributions to the interpretation of findings and revised the manuscript. TE participated in the conception and design of the study, made substantial contributions to the statistical analyses and interpretation of findings, and revised the manuscript. All authors read and approved the final manuscript.
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Hecker, T., Hermenau, K., Salmen, C. et al. Harsh discipline relates to internalizing problems and cognitive functioning: findings from a cross-sectional study with school children in Tanzania. BMC Psychiatry 16, 118 (2016). https://doi.org/10.1186/s12888-016-0828-3
- Harsh discipline
- Mental health
- Internalizing problems
- Working memory
- School performance