Cumulative injustice

Police stops and the development of legal cynicism in the life course

Thiago R. Oliveira

University of Manchester

My goal today

 

 

 

 

\(\leadsto\) Do adolescents with cumulative experiences of police stops develop enduring legal cynicism that persists into adulthood?

An issue with the literature

Most research on the effects of exposures to policing:

 

\(\leadsto\) Yet, encounters are embedded within broader trajectories of repeated experiences and neighbourhood socialisation

Theoretical foundations

Procedural justice theory

“Each of these police-citizen contacts is potentially a ‘teachable moment’ about policing for both citizens and police” (Tyler, Fagan, and Geller 2014, 752)

  • Every encounter in which an officer exercises authority is a teachable moment in which individuals update their expectations about how they will be treated in the future

 

  • Group engagement model: fair treatment communicates that individuals are valued members of the wider group that legal authority represents (Tyler and Blader 2003)

Our proposal

A developmental model of repeated teachable moments

Reframe experiences with unjust policing as cumulative, developmental, and contextual

 

Each individual event remains a teachable moment, but they are embedded within trajectories of exposure across the life course

  • Direct exposures
  • Network exposures
  • Neighborhood exposures
  • Intergenerational experiences

Cumulative injustice

Encounters communicate inclusion or exclusion — but we need to situate those signals within the temporal, cultural, and structural contexts in which they are lived

 

“I was eight when I first got stopped. (…) Thirteen, fourteen, that’s when I get stopped at least three times a week” (Haldipur 2018, 43)

 

Accumulated experiences of unjust policing across the life course
\(\Rightarrow\) socialization context of cumulative injustice

Preliminary empirical evidence

Data

British Cohort Study

  • Following the lives of 17,000 people born in the UK in 1970
  • 12 sweeps of data collection, from infancy to age 46

 

Measures

  • Any experiences of police stops between ages 10 and 16
  • Number of experiences of police stops followed by a warning between ages 10 and 16
  • Legal cynicism measured at ages 16, 26, 30, and 34

Analytic strategy

Growth curve model

 

  • Developmental trajectories of legal cynicism from age 16 through 34
  • Influence of the number of police stops followed by a warning between ages 10 and 16 on those developmental trajectories
    • Effects on the initial state of the trajectories
    • Effects on the shape of the trajectories

Analytic strategy

  • Binary outcome: Legal cynicism at ages 16, 26, 30, 34
  • Time specification: age and age squared (quadratic growth curve)
  • Main explanatory variable: number of police stops followed by a warning between ages 10 and 16 (square rooted)
  • Covariates:
    • demographics (sex, ethnicity, socioeconomic status)
    • psycho-social confounders at age 10 (impulsivity, aggressiveness, learning scores)
    • behavioural confounders at age 10 (bullying behaviour, violent behaviour)

\(\leadsto\) Multilevel growth curve model specified with a logistic function link and interaction terms

Results

Average developmental trajectory of legal cynicism among all respondents1

Results

Effects of the number of police stops in adolescence on developmental trajectories of legal cynicism

Thank you!



thiago.oliveira@manchester.ac.uk

ThiagoROliveira.com

@oliveiratr.bsky.social

References

Fine, Adam D, Thiago R Oliveira, Jonathan Jackson, Ben Bradford, Rick Trinkner, and Krisztián Pósch. 2025. “Did the Murder of George Floyd Damage Public Perceptions of Police and Law in the United States?” Journal of Research in Crime and Delinquency 62 (2): 333–82.
Haldipur, Jan. 2018. “No Place on the Corner: The Costs of Aggressive Policing.” In No Place on the Corner. New York University Press.
Kirk, David S, and Andrew V Papachristos. 2011. “Cultural Mechanisms and the Persistence of Neighborhood Violence.” American Journal of Sociology 116 (4): 1190–1233.
Oliveira, Thiago R. 2024. “Aggressive Policing and Undermined Legitimacy: Assessing the Impact of Police Stops at Gunpoint on Perceptions of Police in são Paulo, Brazil.” Journal of Experimental Criminology 20 (1): 83–121.
———. 2025. “Legal Cynicism, Intrusive Policing, and the Dynamics of Police Legitimacy: Evidence from Brazil’s Largest City.” Law & Society Review, 1–36.
Oliveira, Thiago R, Jonathan Jackson, Kristina Murphy, and Ben Bradford. 2021. “Are Trustworthiness and Legitimacy ‘Hard to Win, Easy to Lose’? A Longitudinal Test of the Asymmetry Thesis of Police-Citizen Contact.” Journal of Quantitative Criminology 37 (4): 1003–45.
Sampson, Robert J, and John H Laub. 1997. “A Life-Course Theory of Cumulative Disadvantage and the Stability of Delinquency.” Developmental Theories of Crime and Delinquency 7: 133–61.
Tyler, Tom R, and Steven L Blader. 2003. “The Group Engagement Model: Procedural Justice, Social Identity, and Cooperative Behavior.” Personality and Social Psychology Review 7 (4): 349–61.
Tyler, Tom R, Jeffrey Fagan, and Amanda Geller. 2014. “Street Stops and Police Legitimacy: Teachable Moments in Young Urban Men’s Legal Socialization.” Journal of Empirical Legal Studies 11 (4): 751–85.