This bulletin, the fourth in an annual series, presents a brief description of research projects that have been initiated with support from the Cooperative Research Program of the U.S. Office of Education. Most of the projects were contracted in fiscal year 1960. However, descriptions of projects which were recommended for support in May 1960 but which were not contracted until fiscal year 1961 are incorporated to eliminate unnecessary delays in the reporting of current research. Each description presents a statement of the problem, the major objectives, and the procedures to be followed. The name and title of the investigator, the name of contracting institution, the project number, the duration of the project, and the starting and completion dates are included. Except for the descriptions, the Program has little information available on each study during the course of the research. In some instances, the investigators may be able to provide information to interested persons. Appended are: (1) Investigators and Institutions Engaged in Cooperative Research Projects Contracted During Fiscal Year 1960; (2) Locations in Which Research Projects Were Initiated During Fiscal Year 1960; and (3) Numerical List of Projects. [Best copy available has been provided.]