Figure 2. The Relationship Between Forensic Science and Other Contributing Factors in Erroneous Convictions
Figure 2 is a bar graph showing the relationship when forensic science is cited as a contributing factor along with other contributing factors — inadequate legal defense, perjury or false accusation, false confession, official misconduct, and mistaken witness identification. The most significant number of wrongful convictions in which forensic science is considered a contributing factor is attributable to eyewitness misidentification and official misconduct.
The data points shown on the bar graph are as follows:
| Contributing Factor | Number of Cases |
| Forensic Only | 3 |
| Inadequate Legal Defense | 15 |
| Perjury or False Accusation | 62 |
| False Confession | 36 |
| Official Misconduct | 77 |
| Eyewitness Misidentification | 83 |
Data are based on 133 cases of wrongful conviction listed by the National Registry of Exonerations.