Bonnie E. John (born September 10, 1955) is an American cognitive psychologist who studies human–computer interaction, predictive human performance modeling, and the relationship between usability and software architecture.
She is currently a UX designer at Bloomberg L.P.[citation needed] A founding member of the Human-Computer Interaction Institute, established in 1993 at Carnegie Mellon University, she was previously an assistant professor in the Computer Science Department at Carnegie Mellon.
John was the director of the Masters in HCI Program in Human–Computer Interaction at Carnegie Mellon University from 1997 to 2009.
[1] John researches techniques to improve the design of computer systems with respect to their usefulness and usability.
Her team at Carnegie Mellon University has developed CogTool, an open-source tool to support Keystroke-Level Model analysis.