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This paper calls for improved survey research methods both in formal research projects and in everyday use of survey questionnaires in libraries. The author proposes that probability sampling be recognized as the best practice in library and information science. The problem of selection bias arising from the use of nonprobability sampling, and convenience sampling in particular, is explored. The paper presents examples of unfounded research conclusions appearing in studies using this sampling approach. It also espouses library research and assessment practices that aspire to higher standards of soundness, accuracy, validity, and impartiality. [Copyright &y& Elsevier]

Library and information (LIS) education is undergoing a major transformation. During this time of change, there is a pressing need for data from all stakeholder groups to support strategic decisions within individual schools and across the discipline as a whole; students are a key stakeholder group. This paper reports on a 4-year study of master's students enrolled in an institution undergoing a transition toward an iSchool. The self-administered questionnaire was distributed to students enrolled in the Master of Information Studies program at the University of Toronto eight times: to incoming students in the fall term for 4years, and to the entire student body in the spring term of those same years. The data collected from approximately 1000 questionnaires indicate that students arrive excited about the information professions and optimistic about employment opportunities. As they progress through the program, however, many are not satisfied with professional aspects of their program. They want courses that prepare them for their first professional position, and opportunities to gain experience, which they believe will increase their employability. The data from the 4-year period revealed fluctuations over the years, which indicates the value of examining longitudinal data. [Copyright &y& Elsevier]