On the derivation of Camp's tetrachoric correlation approximation

Gordon Rae

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)


    Although Camp's tetrachoric correlation approximation has been shown to yield excellent results over a fairly wide range, its derivation remains something of a mystery. The present article shows how Camp might have arrived at his formula using a theoretical, rather than an empirical, approach.
    Original languageEnglish
    Pages (from-to)631-636
    JournalEducational and Psychological Measurement
    Issue number4
    Publication statusPublished (in print/issue) - Aug 1997


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