Law School

Criminal Procedure Part Seven: Pretrial Identification, Charging Decisions, and Double Jeopardy

Jan 18, 2026
Explore the intricate realm of criminal procedure! Eyewitness identification poses risks of wrongful convictions, illustrated by the Ronald Cotton case. Discover how suggestive police procedures can alter memories and lead to errors. Dive into prosecutorial discretion, emphasizing the immense power held by prosecutors and checks on their authority. Learn about double jeopardy protections, the dual sovereignty doctrine, and the debates surrounding fairness in punishment. This discussion sheds light on crucial legal doctrines for both practice and exam readiness.
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ANECDOTE

Ronald Cotton Misidentification Chain

  • Jennifer Thompson's ID of Ronald Cotton was initially shaky but became rock-solid after police feedback.
  • Police repetition and reinforcement converted hesitation into false certainty that led to wrongful conviction.
INSIGHT

System vs Estimator Variables

  • System variables are controllable police procedures that can be fixed to reduce misidentifications.
  • Estimator variables are outside police control and affect witness memory accuracy.
ADVICE

Key Procedures To Reduce Suggestiveness

  • Use double-blind administration, pre-lineup instructions, and proper fillers to reduce suggestion.
  • Document witness confidence immediately under double-blind conditions to preserve reliability.
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