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John C. Flanagan’s Contributions Within and Beyond I-O Psychology Note. The authors would like to thank Susan Lapham for her valuable comments and suggestions on this paper. Jeffrey M. Cucina U.S. Customs and Border Protection Nathan Bowling Wright State University Note. The views expressed in this paper are those of the authors and do not necessarily reflect the views of U.S. Customs and Border Protection or the U.S. federal government. 100 In the SIOP 2015 closing plenary session, President Kozlowski shared his vision of expanding I-O psychol- ogy’s horizons to other fields, such as education, medicine, and STEM dis- ciplines. One notable ex- Figure 1. This figure shows two ample of a historical SIOP photographs of John C. Flanagan. figure expanding his or her The left photograph was taken circa horizons to other fields is 1960 by Fabian Bachrach and was John C. Flanagan (Figure 1). provided by the American Institutes This edition of the History for Research. The right photograph Corner discusses Flanagan’s was provided by SIOP. career. We begin with a brief biography of Flanagan’s life, which is largely drawn from the American Psychological Association (APA; 1977), Clemans (1997), and Freeman (1996). Biography John C. Flanagan was born in Armour, South Dakota on January 7, 1906 to a Baptist minister and a schoolteacher. At the age of 3, his family relocated to Washington State, where he spent the rest of his childhood and attended college (APA, 1977). He began his undergraduate education studying electrical engi- neering and physics but eventually discovered an interest in research on human behavior. After several years working as a high school math teacher, he enrolled in the PhD program in mental measurement at Harvard University, working in Tru- man Lee Kelley’s laboratory. He graduated with a PhD in only 2 years and then began working at the American Council on Ed- ucation’s Cooperative Test Service where he directed a large- scale annual achievement test. January 2016, Volume 53, Number 3