ABSTRACT
Objective To formulate the Psychological Core Diathesis Scale for Military Personnel(Part B),and examine the reliability and validity of the scale.Methods Following the psychometric principles,a five factors model of general cognitive ability was firstly constructed by theoretic analysis.The items of initial scale were then developed,followed by repetitive revision and screening for the final establishment of the Psychological Core Diathesis Scale for Military Personnel(Part B),which was composed of 5subtests and 25 items.One thousand and two hundred healthy soldiers were chosen by randomized cluster sampling to participate in the measurement,and 1143valid questionnaires were analyzed for item analysis,Cronbach'?coefficients,split-half reliability and construct validity.Four weeks later,50out of the 1143soldiers were retested for evaluation of the test-retest reliability.Another 200soldiers were randomly collected for the measurement of Intelligence Test for Military Personnel(Part B)as well as the Psychological Core Diathesis Scale for Military Personnel(Part B).The correlation between the results obtained from the 2scales was then analyzed.Soldiers were comprehensively evaluated by their squad leader according to uniform standard.Finally,the top soldiers and ordinary soldiers(50each)were selected by 20 squad leaders from the 1143valid subjects,the scores of the 2groups of soldiers on Psychological Core Diathesis Scale for Military Personnel(Part B)were then compared.Results Item analysis indicated that the average difficulty index of subtests ranged from 0.44to 0.80,the discriminatory power from 0.31to 0.50,and the test-retest correlation coefficient between total scale and subtests from 0.6253 to 0.9558(P