Early experiences of social exclusion may have far-reaching consequences on individuals’ psychological wellbeing and future personality development, according to new research reported by PsyPost. The study, which investigates the knock-on effects of childhood social rejection, reveals that not only does exclusion increase loneliness, but it is also linked to a rise in characteristics known collectively as the “Dark Triad”: narcissism, Machiavellianism, and psychopathy. These findings could have significant implications for educators, parents, and policymakers in Thailand, where social harmony and group integration are held in high cultural regard.
In Thai society, where community and social engagement are critical aspects of childhood development, the spectre of social exclusion can be particularly concerning. The growing body of international research, including this latest study, highlights that children who are marginalised—whether due to academic performance, disabilities, family background, or other factors—face a heightened risk of developing chronic loneliness. More worryingly, the study found that these early experiences can also foster personality traits marked by manipulation, grandiosity, and lack of empathy, collectively described as the Dark Triad. The researchers observed that individuals who had been excluded in their younger years reported significantly higher loneliness and displayed more pronounced narcissism, Machiavellianism, and psychopathy as they matured.
Science has long recognized loneliness as a risk factor for mental health problems, and this study contributes further, suggesting a possible causal link between early exclusion and negative personality development. According to the PsyPost article, the researchers argue that “childhood social exclusion is more than a temporary setback; it appears to lay the groundwork for persistent emotional and interpersonal difficulties.” They recommend early intervention in school and family settings to detect and mitigate exclusion, thus potentially preventing a cascade of emotional malaise and maladaptive traits. Although the article does not mention Thailand specifically, the findings resonate strongly with ongoing local concerns about bullying, digital exclusion, and Thailand’s rapidly changing school environments.
Expert perspectives add urgency to these concerns. A representative from the Department of Mental Health at the Ministry of Public Health has noted in previous research that social isolation and bullying in Thai schools remain underestimated risk factors for later-life depression and behavioural disorders Bangkok Post. Internationally, scholars have emphasized “the importance of early, sustained efforts to help children build supportive connections with their peers and teachers," as social competence at school is a predictor of both academic success and positive personality development UNICEF. In the context of Thai classroom culture—where group projects and community values are often emphasized—the potential fallout from exclusion can ripple into adulthood, affecting workplace dynamics, family relationships, and even broader societal cohesion.
The historical context is instructive. In Thailand, traditional practices such as “Bai Sri Su Kwan”—a welcoming ceremony for new group members—underscore the cultural emphasis on inclusion. Yet, the ongoing integration of technology and competitive school admissions can unintentionally exacerbate exclusion among vulnerable groups. The 2022 Thailand School Bullying Survey reported that up to 35% of children had experienced some form of social rejection, with digital exclusion on platforms like Line and Facebook becoming common UNESCO Bangkok.
Looking ahead, experts anticipate that untreated childhood exclusion may fuel rising trends in adult narcissism, distrust, and social disengagement, posing a challenge for Thailand’s social fabric. Policymakers are beginning to take notice: recent educational reforms propose implementing comprehensive social-emotional learning (SEL) programs, increased counselling resources, and teacher training to recognize and address exclusion early Ministry of Education, Thailand. However, sustained public awareness and parental engagement will be essential to ensure these measures are effective.
For Thai parents and educators, the lessons from this research are clear. Fostering a classroom and home environment where every child feels valued, included, and heard could reduce rates of loneliness and mitigate the development of the Dark Triad traits. Practical strategies include encouraging mixed-group activities, teaching empathy and conflict resolution skills, monitoring for signs of exclusion, and supporting victims with accessible mental health resources. By weaving these approaches into the everyday fabric of Thai schools and homes, communities can promote healthier, more resilient future generations.
For further reading, see the PsyPost summary of the study at psypost.org.