The Institute also survived. In general, therefore, these samples were of most value in studying the college-educated part of the population. In attempting to explain and interpret these sex differences, Kinsey clearly changed some of his opinions between the writing of the two volumes, moving to a state of greater uncertainty in the volume on women. There was little or no consideration of love, intimacy, or tension. Because he was also interested in speciation and biogeography, Kinsey needed to collect specimens from diverse regions. Following a lengthy period of assessment, a detailed report by the review group of three—William Cochran, Frederick Mosteller and John Tukey—was published. It focused on behaviors and responses and did not ask about feelings, attitudes, or values. A recurring theme in both volumes was the extent to which such laws did not reflect actual sexual practice. Of some interest is the possibility that there may have been a substantial drop in this early adolescent male homosexual expression over the last fifty years. Institute staff also expanded their impact during this period by hosting symposiums, numerous art exhibits, and public facility tours. Over the next 25 years, Gebhard succeeded in opening the institute's doors to scholars around the world, making it a leading resource center for those interested in all facets of human sexuality. These allegations, which range from his being a pedophile, to his carrying out sexual experiments on children, or training other individuals to do so, are entirely without foundation, and are solely based on his reporting of the sexual, and in particular, orgasmic responses of children Tables 31 to 34, Sexual Behavior in the Human Male. However, he showed himself responsive to criticism when it was backed up with good evidence, and perhaps his somewhat arrogant manner contributed to his success in what was an exceptionally courageous and monumental piece of pioneering research. Indiana University Press, Wardell Pomeroy as director of field research. His views on taxonomy won wide acceptance, and his textbook for undergraduates, An Introduction to Biology, was well received and went through three editions.