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Since the early 1970s, the CSM Program has modified and generalized a package of programs which became known as the Berkeley System for Computer-Assisted Telephone Interviewing (CATI) to handle a variety of data collection procedures, and continues to develop (and disseminate) new techniques for the analysis and documentation — as well as as collection — of questionaire-based data. Current CSM development activities are primarily dedicated to the Computer Assisted Survey Execution System (CASES) and Survey Documentation and Analysis (SDA).