Criminal justice Study Guide

📖 Core Concepts Criminal Justice System – The coordinated institutions (police, courts, corrections) that deliver justice after a crime. Goals – Retribution, reform, rehabilitation, crime prevention, and victim support. Three‑part Structure – (1) Law‑enforcement (investigate/arrest), (2) Courts (adjudicate), (3) Corrections (sentence & supervise). Adversarial Process – Two opposing parties (prosecution vs. defence) present evidence; a neutral judge/jury decides guilt. Key Theories – Utilitarian (outcome‑based), Retributive (punishment proportional to harm), Restorative (repair victim‑community harm). 📌 Must Remember Primary institutions: police, prosecutors, defence attorneys, judges, prisons/jails, probation & parole offices. Federal agency: FBI – investigates federal crimes; called in when a threat is national. CompStat: NYPD tool that maps crime trends, holds precincts accountable, and underpins problem‑oriented policing. Verdict rules: Some jurisdictions require unanimity; others permit majority votes. Indigent defence: Constitutionally guaranteed government‑paid lawyer when liberty or life is at stake. Capital punishment: Still legal in some jurisdictions; abolished in many others for cruelty/irreversibility. 🔄 Key Processes Police Investigation → Arrest Gather intelligence → Build case → Obtain warrant (if needed) → Use justified force → Arrest suspect. Prosecution & Plea Bargaining Prosecutor reviews evidence → Files charges → Negotiates plea (guilty/no‑contest) for reduced sentence or diversion. Court Trial Jury selection → Opening statements → Presentation of evidence (prosecution → defence) → Closing arguments → Jury deliberation → Verdict. Sentencing & Corrections Judge imposes incarceration, probation, parole, fines, or community service. Probation/house arrest restrict movement; parole releases early under supervision. 🔍 Key Comparisons Police vs. FBI – Local peace‑keeping & routine law enforcement vs. federal investigative authority for national threats. Parole vs. Probation – Parole: early release from prison, stricter supervision. Probation: alternative to prison, limits mobility without incarceration. Retributive vs. Restorative Justice – Retributive: punishment proportionate to crime. Restorative: focus on victim‑offender dialogue and community repair. ⚠️ Common Misunderstandings Plea bargaining = admission of guilt – Not always; can be “no contest” to avoid trial risk. “Justice for all” means identical outcomes – It means equal legal treatment, not identical sentences. All courts require unanimous juries – Some jurisdictions accept majority decisions. 🧠 Mental Models / Intuition Three‑leg stool: Law‑enforcement, Courts, Corrections must all be present for the system to stay balanced. Pipeline view: Input (crime) → Process (investigation → trial) → Output (punishment/supervision). Deterrence vs. Rehabilitation: Think of “scare” (deterrence) vs. “teach” (rehab) as two levers policymakers pull. 🚩 Exceptions & Edge Cases Non‑unanimous verdicts – Allowed in certain states/jurisdictions. Capital punishment – Legal only for the most serious offenses; many states have moratoria or bans. Indigent defence only when liberty/life is at stake – Minor infractions may not qualify. 📍 When to Use Which Choose community policing when trust‑building and crime reduction through resident cooperation are priorities. Deploy CompStat/Problem‑oriented policing when data shows persistent hotspots. Select parole over probation when a prisoner has served a substantial portion of the sentence but still requires supervision. Apply restorative justice in low‑level, non‑violent offenses where victim‑offender dialogue can heal harm. 👀 Patterns to Recognize Data‑driven policing → targeted interventions (e.g., rise in burglaries → CompStat maps → increased patrol in hotspot). High recidivism → systemic failure – signals gaps in rehabilitation or supervision. Bias complaints → potential procedural unfairness – watch for patterns of discrimination in jury selection or sentencing. 🗂️ Exam Traps Distractor: “The FBI handles all criminal investigations.” – False; most investigations are local police. Distractor: “A unanimous jury is required everywhere.” – Not true; some jurisdictions accept majority verdicts. Distractor: “Restorative justice eliminates punishment.” – It supplements, not replaces, appropriate sanctions. Distractor: “Capital punishment is used for any murder.” – Only applies in jurisdictions that retain it, often limited to aggravated murder. --- Study tip: Review each heading, quiz yourself on the bullet‑point facts, and visualize the system as the three‑leg stool to keep the relationships clear. Good luck!