What three areas of assumptions are most important for understanding the shifts in juvenile justice policy over the past 100 years?

Assumptions about the nature of juvenile offenders: Changes in perceptions of juveniles as either "redeemable" or "irredeemable" have influenced the policies aimed at rehabilitation versus punishment.

Assumptions about the impact of social factors: Shifts in understanding the role of poverty, race, and other social determinants in shaping juvenile delinquency have influenced policy responses.

Assumptions about the effectiveness of different interventions: Evolving beliefs about what works in reducing juvenile crime, whether through prevention, diversion, or incarceration, have driven changes in policy approaches.