According to a significant study published in the Journal of Research on Adolescence , exposure to harsh parenting methods at the critical age of 13 years demonstrated a strong correlation with elevated levels of various risky adolescent behaviours, most notably including tobacco use by the time participants reached 18 years of age.

Furthermore, Psychology Today has reported findings indicating that children subjected to moderately or severely harsh parenting approaches exhibited considerably diminished emotional regulation capabilities. These young individuals also experienced substantially lower levels of self-esteem and demonstrated reduced prosocial behaviours, including a decreased likelihood of helping others, when compared to their counterparts who were raised by parents employing less harsh disciplinary methods. The research further revealed that children of harsh parents encountered significantly more difficulties in establishing and maintaining healthy relationships with their peer groups.

Another research paper published in the Child Abuse Review , which systematically analysed and combined data from 45 separate studies examining Chinese parents and their children, uncovered particularly concerning behavioural outcomes. The findings indicated that children raised under harsh parenting conditions exhibited markedly higher rates of aggressive and defiant conduct, demonstrated increased tendencies toward shouting or violent behaviour, and faced elevated risks of developing Attention-Deficit/Hyperactivity Disorder (ADHD).

Moreover, adolescents who experienced harsh treatment from either parent showed measurable deterioration in physical health markers and significant increases in Body Mass Index (BMI), according to findings published in the Social Science & Medicine journal, underscoring the comprehensive impact of harsh parenting on overall adolescent health.