Principles of Research

Authors

  • Jerome Cornfield

    Corresponding author
    • Department of Biostatistics; paper no. 325
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    • Deceased. Professor of Biostatistics, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland


  • Originally published in the American Journal on Mental Deficiency, by J. Cornfield, Volume 64, Number 2, pages 240–252. Reprinted with permission from the American Association on Intellectual and Developmental Disabilities, 501 3rd Street, NW, Suite 200, Washington, DC 20001; www.aaidd.org.

Department of Biostatistics; paper no. 325

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