Design and Construction of Lifeguard's Vigilance in Surveillance Questionnaire

The purpose of this research was to design and construct a questionnaire for evaluating lifeguards’ vigilance in surveillance. Present research samples were degree 1 and 2 lifeguards from different provinces of Iran in 1391 and 1392 that their management agreed to cooperate with researchers. In process of designing and construction of questionnaire, identification of psychological factors affecting vigilance, simplification of these factors and drawing proposed conceptual model, face and content validity of factors, construction of questions bank and initial questionnaire, face and content validity of initial questionnaire, a pilot test, and item analysis were done and ultimately, a 142- items questionnaire was obtained. In process of determining validity and reliability of questionnaire, at first, the 142- items questionnaire were given to 310 lifeguards. Then, for analyzing construct validity of questionnaire, the Principle Component Analysis methods with Direct Oblimin Rotation technique and Minimum Partial Average method for determining the number of extracted component, were used. To determine Questionnaire reliability, time reliability test with 10 days interval (intra class correlation) and internal consistency (Cronbach Alpha) were used on another 40 lifeguards. Result demonstrate that the final 102- items questionnaire with 15 major component that determine 54/91 percent of total variance among all questions and also with internal consistency of 0/92 and significant test retest reliability of 0/74, is a valid, reliable, localized, and specialized questionnaire for evaluating vigilance in lifeguard's surveillance.