The document discusses six major causes of wrongful conviction:
1. Eyewitness misidentification is the leading cause, responsible for 72% of wrongful convictions overturned by DNA evidence. Eyewitness identification is unreliable due to the malleability of human memory.
2. Unreliable or improper forensic science techniques and forensic scientist misconduct have also led to wrongful convictions. Most forensic techniques have not been thoroughly scientifically evaluated.
3. False confessions, which are sometimes coerced, have also contributed to wrongful convictions.