Psychometric Evaluation of EMBU for Junior High School Students in Guangdong Province

To analyze the psychometric performance of Egma Minnen av Bardndosnauppforstran (EMBU) for junior high school students in Guangdong Province. Methods Stratified random sampling method was used to select 1248 junior high school students from 6 middle schools in Guangdong province．EMBU was used to investigate them. Cronbach's α coefficient and split-half reliability were used to analyze the internal consistency of the questionnaire．Convergent validity, discriminant validity and factor analysis were used to evaluate its structural validity. Floor and celling effect were used to evaluate its sensitivity. Results Cronbach's α coefficient of the total questionniar was 0.933, and the Cronbach's α coefficients of Father's and Mather's subscale were 0.896 and 0.902, respectively, which met with the requirements of the group comparison. Spearman-Brown split-half coefficient of the total questionniar was 0.947, and Spearman-Brown split-half coefficients of Father's and Mather's subscale were 0.858 and 0.887, respectively．The calibration success rates of convergent validity of 11 dimensions were all above 81.3%. The calibration success rates of discriminant validity of 11 dimensions were all above 90.0%. Six factors were extracted from Father's subscale and five factors were extracted from Mather's subscale, with the cumulative variance contribution rates of 61.118% and 64.007%, respectively, which basically met the theoretical conception of EMBU. The score distribution of each dimension was governed by a normal distribution, without any floor or celling effect. Conclusions T