Johnson O'Connor

'''Johnson O'Connor''' (January 22, 1891 – July 1, 1973) was an American psychometrician, researcher, and educator. He is most remembered as a pioneer in the study of aptitude testing and as an advocate for the importance of vocabulary. Provided by Wikipedia
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    Psychometrics a Study of Psychological Measurements / by O'Connor, Johnson

    Published 1934
    Book