Much research has been dedicated to improving the reliability of eyewitness testimony. one finding reveals that when constructing a lineup, similarity between the "fillers" and the suspect does result in missed identification of some guilty suspects but also substantially reduces erroneous identification of many innocent people.

The answer that completes the given blank above is the term INCREASING. It is based on the study about the similarity between what the suspect does and the "fillers" and how this has improved the reliability of the eyewitness testimony. This case typically needs a critical analysis and therefore erroneous identification should be reduced as much as possible.