G. S. Welsh died on December 10, 1990, at the age of 72, at his home, the historic Woolen-Roberts-Welsh House, in Chapel Hill, NC.
[1] He then continue his education at the University of Pennsylvania, earning his master's degree in clinical and experimental psychology in 1943.
[1] Circa 1945, he became the chief of Psychology Service at Bushnell General Hospital in Utah, where he was tasked with assessing the mental status of Italian POWs, despite his lack knowledge of the language.
[1] This spawned his desire to develop non-verbal measures of psychopathology that could be used across language barriers, an interest that remained with him throughout the remainder of his education.
[1] While still working on his degree in 1948, he was appointed Acting Chief Psychologist at Fort Snelling Veterans Administration Hospital in Minneapolis.
[1] While working at the VA Hospital, 1948 to 1949, he attempted to develop a non-verbal version of the Minnesota Multiphasic Personality Inventory (MMPI).
Welsh realized the non-verbal MMPI he created while working on his PhD may be tapping into something besides psychopathology and emotional disorders.
[6] Similar to the non-verbal MMPI, this test consisted of 400 black and white figures, which participants were to indicate which ones they liked and disliked.
As on the older measure, preference for more complex, asymmetric images is considered to reflect a more creative personality.
[12] Next, in 1963, Welsh began serving as research coordinator for the North Carolina Governor's School for the academically and artistically talented.
[1][13] In 1992, W. Grant Dahlstrom stated, “This work is a lasting contribution to the challenging task of predicting creative talent.” Multiple editions have since been updated and published.
[1] As of April 15, 2015, Welsh's publications on personality and measurement have been cited hundreds of times over the past few decades.