“Every day I have that test. Everything I do,” President Biden said in his ABC News interview. “Not only am I campaigning, but I’m running the world.” By Zolan Kanno-Youngs President Biden said in an ...

There has been much talk about the cognitive abilities of Trump as he has struggled recently to speak clearly at press conferences and has spent many hours posting on social media late at night. The ...

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 ...

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