Revision Of Shanghai Special Child Perception Scale And Compilation Of Simplified Version

This study is to revise Shanghai "Special Child Perception Ability Assessment Scale"(2012 edition).On the one hand,the text is comprehensively revised on the basis of the original scale.On the other hand,a more thorough statistical analysis of the scale is made to ensure the scientific nature of the scale structure and content from the empirical perspective.The research mainly includes four major parts.The first part is the background of the research,mainly summarizing researches on children's perceptual development,perceptual abnormalities,and representative perceptual scales at home and abroad,which provid ideas for revision of the scale.The second part is the preliminary revision of the scale.Mainly based on the relevant maturity theory,combined with the problems in the actual test of the original scale,the instruction of the original scale,the structure and the items,the scoring standard,the operation description was completely revised,and an initial scale consisting of six fields and 87 test items was formed.The initial scale is confirmed by the experts,and has good expert validity.The third part of the scale is to analyze the reliability and validity of the scale.It is divided into two parts: the initial test of the scale and the formal test of the scale..The initial test of the scale used 402 special children as subjects to carry out item analysis,reliability test,and exploratory factor analysis on the scale.The item analysis results show that the initial scale has good discrimination and homogeneity;the reliability analysis results show that the initial scale has high internal consistency,half-reliability,scorer reliability,and test-retest reliability.The 87 items were analyzed by exploratory factor analysis,according to the statistical screening standard,17 items were screened out,70 items were retained,and the model structure of the first order six factor was preliminarily determined.The formal test used 417 subjects for confirmatory factor analysis and reliability analysis.The confirmatory factor analysis results showed that the P value and chi-squared value(?2),?2/df,RMR,IFI,TLI,CFI,RMSEA,PGFI,PNFI Both PCFI model aptitude indicators meet statistical requirements,indicating that the model structure of the first order six factor was well matched with the actual data,and the formal scale had better structural efficiency.The reliability analysis results show that the internal consistency and half-reliability of the formal scale are high,and the reliability of the scale is good.Finally,the official scale was determined to contain six fields and 70 test items.The fourth part is the compilation of the simplified version of the scale.Based on the formal revision scale,four classical measurement indicators named the Cronbach's alpha values,the revised project total correlation,the correlation coefficient,and the factor load value were applied,combined with the expert opinion to screen the measurement item.Finally,a simplified version of the scale containing 33 items is formed.The evaluation sample verified that the simplified version has a good structural validity and reliability.