جستجوی مقالات مرتبط با کلیدواژه « اعتبار سازه » در نشریات گروه « روانشناسی »

Fear of falling can lead to discomfort and decreased quality of life in elderly people. The purpose of this study was to prepare a short version of the International Falls Efficacy Scale for older adults, originally designed to measure fear of falling. In this regard and to confirm the construct validity of short version of the international fall efficacy scale, 200 (108 male and 92 female) older adults with different levels activity were selected by available sampling and then completed the questionnaire. Methods of the research include: translation-back method and face validity to confirm accuracy of the scale translation. Confirmatory factor analysis and Pierson’s correlation was used for approving the structural and convergent validity of the scale. Cronbach’s Alpha coefficient was used for internal consistency, and intra-class correlation coefficient under test-retest method was used to study temporal reliability of items and percentile points were used for normalization. The reliability of the questionnaire was obtained using Cronbach's Alpha of 0.95 and the coefficient of inter-class correlation of 0.87. In order to investigate structural validity and convergent, confirmatory factor analysis and the main version of the international scale of respectively were used. The results of the study indicated that the indices were optimal (RMSEA=0.02, CFI=1, TLI =1). The brief Persian version of the scale (FES-I) can be referred as a useful tool to evaluate the fear of falling of Iranian older adults.

The purpose of this study was to investigate psychometric properties of a persian Personality Assessment Inventory (PAI) in the Iranian colledge student's population. In this descriptive research among all students of Tabriz universities in 2017 a sample group including 462 college students was selected by a multi-stage cluster sampling method. The validity and reliability of the inventory items, validity of the structure, and internal consistency estimated by item analysis, exploratory factor analysis, and  Cronbach's alpha coefficient methods. The exploratory factor analysis performed by the main components and varimax rotation showed that 6 components including antisocial tendency, depression and anxiety, mood and emotional instability, psychosis syndrome, psycho-somatic syndrome and stress related problem, have the most simple structure and the coefficients of validity of these components estimated between 0.92 and 0.98. The correlation coefficients between the subscales also showed that these coefficients were between 0.34 and 0.92. Based on this finding, preliminary Persian version of PAI has adequate psychometric properties and it can be used as a valid psychological assessment tool.

The purpose of this study is determination of factor structure and psychometric features «negative self-picture scale» (NSPS). So، after preparation of mentioned scale and implementation of basic steps as well as omission of possible problems، NSPS was done on 574 Shahed University bachelor students، selected by cluster sampling and factor structure of this tool was surveyed by heuristic confirmatory factor analysis. Results of these analyses represents NSPS 4-factor structure which respectively include: «concerns on appearance of physical defects»، «concerns on of social competency defects (1)»، «concerns on of social competency defects (2)» concerns on defects and disabilities related to anxiety symptoms control«. In order to study NSPS validity and its factors، internal consistency coefficients and retesting coefficients were calculated. Results represent NSPS acceptable validity and its factors. Validity study of NSPS structure and its factors with 6 scales (SIAS SPS، LSAS-SR،SPIN، DASS-21، BDI-II) shows that Pearson correlation coefficients between NSPS and other scales is meaningful and only its correlations with LSAS-SR is at least and non-meaningful which will be explained. Generally، this study provides evidences for accuracy of factor structure NSPS acceptable validity.

Organizational Justice is an essential concept dating back to the Greek golden age and has been known to have two dimensions (distributive and procedural). By entering this concept into the organizational issue، interpersonal dimension was added to the previous two dimensions، leading to the three-dimensional concept of organizational justice. This concept has formed an important part of the recent organizational industrial research. The most comprehensive concept of organizational justice was developed by Colquitt (2001) which includes four dimensions and adds informational justice to previous dimensions. The current study provides evidence for construct and criterion validity of the Colquitt (2001) Scale. A sample consisting of 350 employees of an organization was used to analyze construct and criteria validity. For construct validity، confirmatory factor analysis was used and the four dimensions model was confirmed. For criterion validity، participants filled out the organizational justice scale and additional scales related to the criterion variable which included instrumentality، autonomy، leadership behavior، and participation in decision making. Results demonstrated that the Organizational Justice Scale has suitable construct and criterion validity.