جستجوی مقالات مرتبط با کلیدواژه « ویژگی های روان سنجی » در نشریات گروه « علوم اجتماعی »

Being proficient in traffic test has a significant effect on reducing costs due to non-compliance with driving regulations. The traffic test biases put validity, fair evaluation, and correct decision in jeopardy. Therefore, the research objective is to study the psychometric features in order to validate the traffic test.

The present applied study is quantitative in terms of type and categorized as studies called "psychometrics". The research population included participants in the traffic test in 2020 that 297 people were selected by simple random. Data were analyzed by R software, and reliability (α=0.7) as well as validity were verified based on differential action analyses.

The research findings showed that the traffic test is an easy test and participants mostly use guessing the correct answer. The discriminant coefficients of all questions were positive and acceptable. Non-based IRT tests converged, and with the exception of nonlinear regression method, which identified questions 11 and 16 as biased, other methods detected only question 16 as biased. Tests based on IRT failed to converge.

The results of the research showed that the traffic test is valid and reliable. Based on differential functioning analyses, there is generally validity due to homogeneity of measurement in reference and focal groups. Nonlinear regression method is also a useful alternative to methods based on IRT and is has good capabilities in tests where there is a guess effect.

The purpose of the present study was to investigate the psychometric adequacy of the Cyber-Victimization Scale among 326 girl students of Tehran that were selected with the use of virtual snowball sampling. In this correlational study, they completed the Cyber-Victimization Scale (Buelga et al., 2019), Parent-Adolescent Communication Scale (Purcell, 2007), and Multidimensional Peer Victimization Scale (Joseph & Stockton, 2018). The exploratory and confirmatory factor analysis methods and internal consistency were used to compute the CYBVICS's factorial validity and reliability, respectively. To examine the construct validity of the CYBVICS, correlations between different dimensions of CYBVICS with Parent-Adolescent Communication Scale and Multidimensional Peer Victimization Scale were computed. The results of principal component analysis (PC) and varimax rotation replicated 2-factor structures: direct cyber-victimization and indirect cyber-victimization in the Iranian sample. The goodness of fit indices of confirmatory factor analysis with the use of AMOS confirmed the 2 extracted factors. Correlational analyses between CYBVICS's factors with Multidimensional Peer Victimization Scale's factors provided initial evidence for the CYBVICS convergent validity & correlational analyses between CYBVICS's factors with Parent-Adolescent Communication Scale's factors provided initial evidence for the CYBVICS discriminant validity. Internal consistency for the CYBVICS's factors was desirable (a=0.93). In sum, these findings provide evidence for the validity and reliability of the CYBVICS as an instrument to assess the Cyber-Victimization among Iranian girl students.

The purpose of this study was to construct and standardize the feeling of self-worth questionnaire. This research was describes-correlation. The statistical population of the study included all the clients of one of the psychology clinics in Tehran in the period June-Jul 2020 with 112 people. 80 people from the mentioned community entered the study by available sampling method. The instrument of this research was a 38-item questionnaire and a researcher-made questionnaire based on the theoretical foundations of the research, which was answered by 30 people from the sample. 12 items of the questionnaire that had the least internal consistency with other items were removed from the questionnaire. The remaining 26 items in the four subscales were approved by 8 experts with 75% agreement and the content validity of the questionnaire was confirmed. The modified questionnaire was answered by 50 other people from the sample. Results showed that Cronbach's alpha of this tool was 0.96 for the total self-worth score, and for the subscales of 1) interpersonal relationships 0.89, 2) self-acceptance 0.91, 3) sense of competence 0.86, and 4) The meaning of life is 0.94. The mean total score of self-worth for the study sample was 56.60. The correlation coefficient of the 10-day retest was 0.98 for the total self-worth score and 0.98, 0.98, 0.87, and 0.97 for the subscales, respectively. The findings showed that the self-worth questionnaire has good validity and reliability for use in self-worth research.

Measuring attitude does not end with data analysis but is the beginning of a way through which can increase the quality of attitudinal analysis and provide an opportunity to reduce measurement error. In this study, the difference between the classical test theory (CTT) and item response theory (IRT) in determining the psychometric properties of the data obtained from polling is studied. Before presenting the results of the analysis of these two theories, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were also used to evaluate constructing, validity and reliability of the tools. The subject of the study was actual data on the opinion polls of 3684 people from different groups about television programs. The findings show that both classical test theory and item response theory can provide similar information about the scale items of the latent feature under study. But the two measurement theories give different images of the accuracy of the scales. In general, item response theory offers both more information about measurement accuracy and clearer suggestions for scale improvement.

Social safeness is an important characteristic to equip people for dealing with life challenges and improving well-being. Thus, preparing a valid measure for evaluating this construct reveals its importance. The aim of this study was to investigate the psychometric properties of Persian version of Social Safeness and Pleasure Scale (SSPS).To achieve this, translation- back translation and pilot study were done to prepare the Persian version of SSPS. Two random independent samples (n1=391, n2=36) of high school students in Tehran were examined. Participants rated SSPS, Subjective Academic Well-being, and Self-Compassion scales. Internal consistency by the first sample and test-retest reliability based on the second sample was verified. To examine the validity of the scale, criterion validity and construct validity (via exploratory and confirmatory factor analysis) were applied. Cronbach’s alpha (0.91) indicated desirable internal consistency. Test-retest reliability coefficient was 0.75. Positive correlation between SSPS and Academic well-being scale and negative correlation between SSPS and non-adaptive dimension of Self-compassion displayed concurrent criterion validity. Results of exploratory factor analysis of SSPS’s items extracted 1factor, and confirmatory factor analysis supported this structure. Findings of present study as an initial step revealed that SSPS has appropriate psychological properties in Iranian sample of adolescent students.

The study was aimed to determine the validity and reliability of opium attitudes questionnaire. 6108 of guidance school (3th grades) and high school students filled the opium attitude questionnaire in all of the country. The validity of questionnaire assessed by group discrimination and confirmatory factor analysis method. the results of group discrimination showed that the questions can be discriminated of past and current opium addicts and normal groups. On the basis of factor analysis results 5 factors extracted. These factors with consideration of literature review and loaded items content named: interest to consume، attitude to dangers، attitude to physiological effects، attitude to psychic effects، attitude to social effects to opium. Reliability of subscales examined by Cronbakh’s alpha. The minimum measure of reliability was 0. 77 and maximum was 0. 86. Altogether، the validity and reliability of questionnaire were satisfied. On the basis of present research results، opium attitude questionnaire is appropriate for assessing of students’ attitude to opium among guidance and high school students.