This subseries consists of documents relating to Latham's 1984 study on marriages with outside sexual contacts. This series includes Latham's thesis for his Master of Arts in Psychology from California State University, Fullerton, which was approved on April 25, 1986. The series also includes the surveys that were the basis of Latham's thesis, as well as his survey administration and data analysis materials. The research subjects consisted of homosexual men in intact heterosexual marriages. The surveys include the Dyadic Adjustment Scale (DAS) and a 17-page questionnaire constructed by Latham. Latham's principal hypothesis was that variations in self- reported marital adjustment scores could be explained by the most important reason cited by subjects for a heterosexual relationship, but this was not confirmed by his sample.