Researchers have been interested in environmental effect on human behavior since the 1930s and have lately developed complex testing instruments and techniques for its study. In this paper, campus characteristics are synonymous with campus environment. Concern is with environmental effects on human behavior, and not the environmental components themselves. The Press-Need Concepts (Murray 1938) were an initial attempt to explain personality in terms of environment. Other work elaborated on the Press-Need Concepts as analytical tools for assessing personal satisfaction or frustration. Several testing instruments to evaluate the applicability of the Press-Need Concepts in 4-year educational institutions were developed (Activities Index, College Characteristics Index, High School Characteristics Index). Development of these instruments allowed the researcher to apply the Press-Need Concepts to groups rather than to individuals. Later Pace developed a briefer, yet valid instrument (College and University Environmental Scales) to supplement the earlier tests. Results from using these instruments in a junior college setting were unsatisfactory and led to the construction of an alternative 2-part instrument (Junior College Environmental Scales). This work, done by Hendrix, was later extended by the author of this paper in the development of his own instruments (Faculty Environmental Preference Scales and Faculty Environmental Scales). (AL)