James T. Lamiell retired in 2017 after 42 years as a university professor. 36 of those years were spent at Georgetown University, USA. His scholarly work has long been concentrated in the history and philosophy of psychology, with interests in psychological research methodology and in the works of the German philosopher and psychologist William Stern (1871-1938).

Kathleen L. Slaney is a professor in the Department of Psychology at Simon Fraser University, Canada. She is a Fellow of the American Psychological Association. Her research has focused primarily on psychological meta-science.