Quarterly of Educational Measurement

Abstract The fact that childhood temperament is one of the most important determinants of adults' emotional and psychological disorders makes early assessment of difficult and problematic temperament necessary. Moreover, appropriate tools are needed to attain this objective. The present study seeks to evaluate the psychometric characteristics of ps-TCI in the Iranian preschoolers. A statistical sample of 200 children from five kindergartens in Shahriar was randomly selected through the process of cluster sampling, and their temperament and personality were tested by 18 kindergarten teachers using the Cloninger’s Preschool Temperament and Character Inventory. After fourteen days, the process was repeated, and its validity and reliability were assessed. The reliability was calculated by test-retest, spilt-half and Cronbach's alpha coefficient as 0.89, 0.75 and 0.82, respectively. The validity of the inventory was also investigated by convergent validity and exploratory factor analysis. The results from factor analysis and varimax rotation method yielded seven factors, including cooperativeness, harm- avoidance, novelty-seeking, reward-dependence, persistence, self- direction and self-transcendence which accounted for 59.19% of the total variance. The convergent validity was confirmed by computing a correlation coefficient between the subscales together and with total scale, which was significant between 0.62 and 0.71 (p<0.01). In conclusion, Cloninger’s preschool Temperament and Character Inventory generally proved to be a valid and reliable tool in evaluating the temperaments of the Iranian preschoolers.

Abstract This descriptive correlation study is aimed at constructing and standardizing a test to measure personality based on Golestan Saadi. 276 students (137 female and 139 male) from Allameh Tabatabaee University were participated in this study. The questionnaire with 108 items was based on content analysis of the characteristics mentioned by Saadi in the first chapter of Golestan. In order to gathering the data, the questionnaires were filled by the students. Exploratory factor analysis by SPSS software was used to determine the numbers of the basic factors. The findings of this study confirm the questions. The calculated Cronbach Alpha coefficient was high (α= 0/96), which shows high reliability and internal consistency of the questionnaire. Construct validity (calculated by exploratory factor analysis with Varimax rotation) was also desirable. An exploratory factor analysis with Varimax rotation was administered on the questionnaires. According to the results, the final questionnaire consists of 63 items categorized in 5 basic components, including: ‘social maturity’,’ searching for connection’, ‘economical time use’, ‘kindness’ and ‘generosity’. The results also showed that discriminant validity of the questionnaire (its power for differentiating between groups) is desirable, as if two groups of healthy participants and clients of counseling centers can be distinguished by the questionnaire. On the other hand, norm tables of Z and T scores have been plotted for ’economical time use’ component separately because except for ‘economical time use’ component no difference between females and males’ mean scores were found (by independent sample t-test). Therefore, the tables were plotted generally for other components and for the total score. The criterion-related validity of the questionnaire with five factors of NEOPI-R is within acceptable limits. Cut-off point of the test was determined by calculating the confidence interval of total score and each scale of the test.
 

Abstract The Big Five Inventory (BFI-10) is a shorter, 10 item version of the BFI. It was designed to be used when time limitations in a research protocol does not allow using the longer BFI. It measures personality in one minute or less. In this report, we evaluate 10-item measures of the Big-Five personality dimensions. The current study was conducted in survey and cross sectional as well as ex-post facto research context. A group of 317 randomly selected normal participants took part in this research. Principal component analysis extracted five factors which were labeled big five traits. However, for this scale other type of validity (convergent validity) and three reliabilities (test, retest, split half and internal constancy) were reported. The factor analysis and validity reliability coefficients demonstrated the same factor structure that previously found. Based on these results, it was concluded that BFI-10 contain good validity and reliability in Iranian population and it can be used, as valid measure in personality screening studies.