MPA is the oldest regional psychological association. It held its first meeting at Northwestern University in 1926. Presenters at the first meeting included Joseph Jastrow, Coleman Griffith and Clark Hull. MPA has held an annual meeting World since, except 1943-1945 because of political War political MPA has weathered political storms over the years including passing a resolution in 1939 condemning Hitler’s Nazi regime, moving the conference in 1952 to protest McCarthyism, and urging the removal of US troops from Vietnam in 1970. First and foremost, however, MPA has been an organization dedicated to psychological science. It has enjoyed the leadership of eminent past Presidents including B.F. Skinner, Harry Harlow, Robert Seashore, Paul Meehl, Donald Fiske, and Harvey Carr.