Study results can be no better than the quality of the raw data on which they are based. When the securing of these data depends upon the services of workers who are staff members of other agencies and who have assumed this responsibility in addition to their regular assignments, special safeguards must be provided for the collection of field materials.The collection of data for the study reported in this paper covered a period from February 1, 1954 to February 1, 1956. Reports and records were received regularly by the study staff. At the end of the study, records had been received for every case listed on the admission reports. In the post study conference the field participants were still full of enthusiasm and ideas, and even volunteered to assist with another study if they were needed.It is felt that the procedures used in the conduct of the study had a definite relation to the attitudes of the research associates and to the completeness of the data submitted. They were well oriented to the entire study plan and the importance of their contribution. They participated in the planning for the collection of field data and made the final decisions regarding the practicability of securing the items desired. They also had an opportunity for periodic face to face conferences with a member of the study staff to discuss problems and to interpret materials in the basic records. They received reports of developments and of progress of the other aspects of the study that were the responsibility of the study staff. They participated in the analysis and interpretation of the findings. They were and are considered as an integral part of the total study staff.