In 1914, James Leuba, a psychologist at Bryn Mawr, conducted several surveys of scientists and college students regarding their religious beliefs, publishing his findings in a 1916 book titled The Belief in God and Immortality. Among scientists generally, 41.8 percent indicated they were believers in a personal God (defined as a being to whom one could pray, expecting a response), whereas 41.5 percent expressed disbelief in such a God and 16.7 percent declared themselves to be agnostic. Among elite scientists (...) (those with an asterisk by their names in James McKean Cattell's American Men of Science), the percentage of believers was lower, at 31.6 percent. Among elite biologists, the subset who believed in God was even smaller—16.9 percent. In 1996 and 1998, Edward Larson and Larry Witham replicated Leuba's study, publishing their findings in the April 23, 1997, and July 23, 1998, issues of Nature. Their surveys revealed that of all scientists questioned, 39.3 percent professed belief in a personal God, about the same as in the 1914 study. However, among elite scientists—now defined as members of the National Academy of Sciences—the proportion who were believers had plummeted to 7 percent, with biologists showing the least religious conviction at 5.5 percent. In the general population of the United States, some 86 percent profess belief in the existence of a personal God, according to a 1999 Gallup poll. These figures dramatically indicate the great no-mans land separating the religious convictions of ordinary citizens from those of the scientific community, especially its leading members. This dissensus has fueled many of the bitter battles recently fought over evolution and stem cells and has ignited explosive devices laid along several political byways. (shrink)

Recent summaries of psychologist James H. Leuba's pioneering studies on the religious beliefs of American scientists have misrepresented his findings and ignored important aspects of his analyses, including predictions regarding the future of religion. Much of the recent interest in Leuba was sparked by Edward J. Larson and Larry Witham's commentary in Nature , “Scientists Are Still Keeping the Faith.” Larson and Witham compared the results of their 1996 survey of one thousand randomly selected American scientists regarding their (...) religious beliefs with a similar survey published eighty years earlier by Leuba. Leuba's original studies are themselves problematical. Nonetheless, his notion that different fields of science have different impacts on the religion‐science relationship remains valid. Especially significant is his appreciation of religion as a dynamic, compelling force in human life: any waning of traditional beliefs does not mean a decrease in religious commitment but calls for a new spirituality in harmony with modern scientific teachings. Leuba's studies, placed in proper context, offer a broad historical perspective from which to interpret data about religious beliefs of scientists and the impact of science and scientists on public beliefs, and opportunity to develop new insight into the religion‐science relationship. (shrink)