Previous research has shown that cannabis intoxication may increase false memories, thereby affecting the validity of eyewitness testimony. Evidence-based investigative interview methods might ...

People lie all the time; they omit information, minimize or exaggerate the truth, or give vague answers. And they lie for a variety of reasons: to save face, spare the feelings of others, get what ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Pew Research Center sometimes employs cognitive interviewing to help improve ...