Trend and projection of the prison population in Germany: statistical analysis of adult and juvenile prisoners (2008–2050).

This book offers an in-depth analysis of the evolution and projection of Germanys prison population, combining scientific rigor with social relevance. Based on official data from the Federal Statistical Office (Destatis) and macro-level datasets, the study applies a quantitative, non-experimental, correlational, and cross-sectional methodology. Advanced statistical techniques were employed, including normality tests (Shapiro-Wilk), ANOVA, Pearson correlations, and linear regression models to project trends up to the year 2050 with 95% confidence intervals. The findings reveal a sustained decline in the prison population (−19.8% between 2008 and 2023) and anticipate a transformative scenario: a sharp reduction in convicted inmates and a moderate increase in preventive detention cases. Additionally, the book addresses critical issues such as overcrowding, mental health, and prison violence, offering strategic recommendations to optimize resources and strengthen reintegration policies. This work is essential for researchers, judicial authorities, and policymakers seeking to understand and anticipate the future of the European penitentiary system. A book that blends data, analysis, and actionable solutions to build more humane and efficient prisons.