Introduction
This essay seeks to explore the psychological underpinnings of criminal behaviour through a case study of an individual involved in county lines activity during their youth, who subsequently engaged in petty crime and drug use into adulthood. Within the framework of Public Health and Community Studies, understanding such trajectories is essential for developing effective interventions. This analysis will focus on two key psychological theories—Social Learning Theory and Strain Theory—to elucidate the factors contributing to the individual’s behaviour. By examining these theories alongside broader social determinants, the essay aims to highlight the relevance and limitations of psychological perspectives in addressing complex social issues like county lines and persistent offending. The discussion will also consider implications for public health strategies targeting at-risk populations.
Case Study Context
County lines refer to the exploitation of vulnerable individuals, often young people, by organised crime groups to transport and sell drugs across regions (Home Office, 2018). In this hypothetical case, the individual—referred to as ‘James’—was recruited into county lines at age 14 in a deprived urban area. Subjected to grooming and coercion, James became entrenched in a cycle of violence and dependency. As an adult, he transitioned into petty crime, such as shoplifting, and developed a substance use disorder, reflecting a pattern of entrenched disadvantage. This case illustrates how early exposure to criminal environments can shape long-term outcomes, a phenomenon that psychological theories can help unpack.
Social Learning Theory
Social Learning Theory, proposed by Bandura (1977), suggests that individuals learn behaviours through observing and imitating others, particularly within their immediate social environment. For James, involvement in county lines likely stemmed from exposure to criminal role models—peers or older figures—who normalised drug trafficking and violence. Rewards, such as financial gain or social status, reinforced these behaviours, while punitive consequences were arguably perceived as less immediate or severe. Furthermore, the lack of positive role models in his community may have limited alternative pathways. While this theory effectively explains how criminal behaviour is acquired, it falls short in addressing structural factors, such as poverty, that create fertile ground for such learning. Thus, while Social Learning Theory provides a sound framework for understanding James’s early offending, its scope is notably limited in isolation.
Strain Theory
Strain Theory, developed by Merton (1938), posits that individuals engage in deviant behaviour when they experience a disconnect between societal goals (e.g., financial success) and the legitimate means to achieve them. For James, economic deprivation and social exclusion likely generated strain, pushing him towards county lines as a perceived shortcut to status and resources. As an adult, persistent barriers—such as unemployment and stigma—may have sustained this strain, contributing to petty crime and drug use as coping mechanisms. This theory highlights the socioeconomic roots of James’s behaviour, offering a broader lens than Social Learning Theory. However, it risks oversimplifying individual agency and does not fully account for psychological resilience or personal choices. Indeed, not all individuals under strain turn to crime, suggesting the need for a more nuanced application.
Implications for Public Health and Community Interventions
Both theories underscore the interplay between individual psychology and social context, offering valuable insights for public health approaches. Social Learning Theory suggests interventions like mentorship programmes to provide positive role models, particularly for at-risk youth. Strain Theory, meanwhile, indicates the importance of addressing structural inequalities through education and employment opportunities. However, integrating these approaches is crucial; focusing solely on individual behaviour without tackling systemic issues is likely to yield limited success. Community-based initiatives, informed by psychological insights, must therefore adopt a multi-faceted strategy, combining prevention, rehabilitation, and structural reform to break cycles of crime and addiction.
Conclusion
This case study of James illustrates how psychological theories, such as Social Learning Theory and Strain Theory, provide a framework for understanding the pathways from county lines involvement to persistent petty crime and drug use. While Social Learning Theory highlights the role of social environments in shaping behaviour, Strain Theory draws attention to the socioeconomic pressures driving deviance. Each perspective, though insightful, reveals limitations when applied in isolation, underscoring the complexity of criminal behaviour. For public health and community studies, these theories suggest the need for integrated interventions that address both individual and structural factors. Ultimately, supporting individuals like James requires a holistic approach, balancing psychological insight with broader social reform to foster lasting change.
References
- Bandura, A. (1977) Social Learning Theory. Englewood Cliffs, NJ: Prentice Hall.
- Home Office (2018) Criminal Exploitation of Children and Vulnerable Adults: County Lines Guidance. UK Government.
- Merton, R. K. (1938) Social Structure and Anomie. American Sociological Review, 3(5), pp. 672-682.

