Objective:To revise the Psychological Security-insecurity Questionnaire(S-I) developed by Maslow and examine its reliability and validity.Methods:Data were collected from 1893 junior middle school students with the original S-I.Results:The revised S-I consisted of 44 items,including 10 first-order factors and 3 second-order factors.It had good test-retest reliability,homogeneity reliability and criterion validity.Conclusion:The revised S-I has satisfying reliabilities and validities,and is suitable to asses the psycholog...