جستجوی مقالات مرتبط با کلیدواژه "internal consistency" در نشریات گروه "روانشناسی"

Helping, which is one of the types of prosocial behavior, refers to a voluntary action or activity that a person shows in order to help others. In this research, the goal was to build a valid and reliable tool to measure the helping structure. This research is of a descriptive-survey type and the statistical population studied were psychology and educational sciences students of Allameh Tabataba’i University in 1401-1402, who were selected through a multi-stage sampling method to the size of 242 of this population. After developing the questionnaire, internal consistency was examined through Cronbach's alpha coefficient and its construct validity through exploratory and confirmatory factor analysis. Factor analysis identified 5 factors including voluntary help, help to family and friends, help to relatives and strangers, small help, and temporary help. Also, the results showed that people have a greater desire to help their family and friends, which is consistent with the existing evolutionary theories in this field. The current research was conducted on students and cannot be generalized to other strata, so it is recommended that this tool be implemented in other strata and other age groups and its psychometric properties should be studied.

Attention-deficit/hyperactivity disorder (ADHD) often persists into adulthood. Instruments for diagnosing ADHD in childhood are well validated and reliable, but diagnosis of ADHD in adults remains problematic. Attempts have been made to develop criteria specific for adult ADHD, resulting in the development of self-report and observer-rated questionnaires. To date, the Conner’s Adult ADHD Rating Scales (CAARS) are the international standard for questionnaire assessment of ADHD.

The current study evaluates a Persian version of the CAARS self-report (CAARS-S-SV). Method of study is analytic-descriptive, from type of studies correlation-psychometric. In order to study the psychometric properties of the questionnaire in normal population, 1021 subject were recruited to fill out the CAARS-S-SV. To determine internal consistency and test consistency, Cronbach's alpha and the correlation between test-retest and test were used. An exploratory and confirmatory factor analysis was performed to examine the Farsi factor structure and confirm the structure of the original American version. Also, in order to determinate the Criterion validity or diagnostic validity, the sample consisted of 74 adult with ADHD and 75 controls. A case-control study was carried out (adult ADHD vs. non-ADHD). The diagnosis of ADHD was evaluated with the Structured Clinical Interview for DSM-IV (SCID-I). 

Factor analysis was done with a Principle axis factoring analysis followed by an Oblimin rotation. The Kaiser-Meyer-Olkin measure of sampling adequacy tests was .912 (remarkable) and the Bartlett’s test of sphericity was 3 (435) = 2011.36, P < .0001, indicating the appropriateness of the factor analysis. This three-factor model accounted for 68% of the explained variance. The Cronbach's alpha coefficient of the three factors was 0.802, 0.758 and 0.869 respectively. The Persion version of the CAARS–S: SV is a valid and reliable scale to discriminate between ADHD adults and controls. A confirmative analysis that was based on the 30 items of the original American model showed a high model-fit. Also, the results confirm the internal consistency and stability of the test.

The confirmative factor analysis results in such a high model-fit that use of the American version is justified with respect to international multicenter studies, for which this instrument will be highly valuable.

The purpose of this study was to investigate the internal validity and homogeneity of school children happiness inventory (SCHI) (Ivens, 2007) in Khorramabad elementary school students. The population of the study was Khorramabad elementary school students and the sample consisted of 240 students in grade 4-6 that were selected in an accessible way. The instruments used were Evans School Happiness Inventory (2007), the software SPSS-25, and the EFA method. Results showed that this inventory was influenced by culture and 2 items were removed from 30 items. EFA, two factors of positive and negative emotions were identified that explained 37.52% of the total variance. The Cronbach's alpha coefficient was higher than 0.7 for both factors. In general, this inventory is suitable for primary school children, and in order to achieve the appropriate norm, it is necessary to standardize it in a higher sample size and examine its fitness indicators in CFA.

The purpose of the present study was to investigate the factor structure and internal consistency of the Harman-Jones (2011) attitude toward the emotion scale (ATES) among the highschool grade 2 students in the academic year of 2018-2019. The statistical population of this study includes all second-grade students in Tehran and a sample of 252 high school students in Fatemiyeh high school in the 6th area of 14th region city of Tehran and the tool used to measure Harman-Jones's attitude toward the emotion. The findings of the exploratory analysis indicated that this scale is by the culture of Iranian adolescents, covering five factors of attitude toward anger, sadness, agony, fear, and pleasure, which together account for 58.92% of the total variance. The items related to these five factors have a T value of above 1.96 and a useful load factor of more than 0.4 and a standard load of more than 0.3. The fitting indices were also reached to desirable proportions, and since RMSEA is less than 0.08, the relative chi-square is less than 3, and the GFI, NFI, CFI, and IFI fit index is 0.9, so the 5-factor model discovered in the analysis Exploration has been confirmed in the confirmation analysis and is consistent with the culture of Iranian adolescents over 16 years of age. Also, each of the five factors has an alpha value higher than 0.7, which is consistent with internal consistency.

The present study was conducted with the aim of evaluating the Civic Moral Disengagement Scale (CMDS, 2009) among a group of Iranian students. In this correlational study, 364 students (192 male and 172 female) were selected from the undergraduate students of Shahid Beheshti University using available sampling method who responded to the Civic Moral Disengagement Scale-Farsi Version. To determine the internal validity and internal consistency of the scale, the confirmatory factor analysis and cronbach alpha formula were used respectively. The results of confirmatory factor analysis based AMOS software showed that multi-factor structure of Civic Moral Disengagement Scale-Farsi Version consisted of moral justification, euphemistic language, advantageous comparison, displacement of responsibility, diffusion of responsibility, distorting consequences, attribution of blame and dehumanization had good fit with data. Internal consistency for the moral justification, euphemistic language, advantageous comparison, displacement of responsibility, diffusion of responsibility, distorting consequences, attribution of blame and dehumanization was 0/88, 0/82 and 0/79 respectively. In sum, these findings provide evidence for the validity and reliability of the Civic Moral Disengagement Scale-Farsi Version as an instrument to measure the “Civic Moral Disengagement” among Iranian university students.

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 aim of this study was to test the factor structure and internal consistency of the 10-item moral identity of (Aquino & Reed, 2002) based on moral traits of an Iranian sample of college students. The sample consisted of 429 students (313 females, 111 males, 5 not reported). The exploratory factor analysis identified two factors accounting for 50.41% of the variance: Symbolization (34.67%) and internalization (15.74%). Internal consistency of the symbolization and internalization factors were 75% and 61%, respectively. The confirmatory factor analysis results indicated that the two factor model fitted the data better than one factor model.

The aim of this study was to evaluate the psychometric properties of Rosen and Brateen (1998) Marital Attitude Scale includes internal consistency and construct validity. This paper is a research of the cross correlation nature and of the aim placed in applied researchs category. For this purpose 400 youths in the age of marriage (200 couples) That in the third quarter of 1394 referred to marriage counseling centers under the Ministry of Sport and Youth,Were selected by convenience sampling. After completing the questionnaire, data was analyzed using spss-23 & R. Cronbach's alpha and ordinal theta (0.75 æ 0.8) showed acceptable reliability of this scale. Also Exploratory factor analysis results shows construct validity of Rosen and Brateen Marital Attitude Scale, and also this scale Includes four subscales. Results showed acceptable reliability and validity of Marital Attitude Scale Rosen and Brattain (1998). The results of this study can be used by consultants and marriage specialists.

The purpose of this study was to evaluate the psychometric properties of empathy and sympathy questionnaire in students. For this purpose, 350 students (130 boys and 220 girls) from high school in Pars Abad were selected by simple random sampling and they responded to the empathy and sympathy questionnaire. Data were analyzed using confirmatory factor analysis and LISREL 8.8 software. The results showed that Cronbach's alpha coefficient for the cognitive empathy, emotional empathy, sympathy components were 0.84, 0.81 and 0.78, respectively. Also, Cronbach's alpha coefficient of the whole questionnaire was obtained by 0.82. Test-retest reliability in interval of two weeks was obtained in range of 0.71 to 0.78. The results of first order and second order confirmatory factor analysis showed that the model has a good fit (RMSEA= 0.056). According to the results, it can be said that empathy and sympathy questionnaire is a useful tool to measure empathy and sympathy in students.

The current study was carried out to investigate internal consistency and factor validity of Omnibus Trust Scale (OTS)developed by Hoy & Tschannen-moran (2003). In this study, 255 teachers from elementary schools of Bajestan were selected through multistage sampling method. Internal consistency of Omnibus Trust scale investigated by Cronbach’s alpha method and factor structure's scale were verified with principal axis factor analysis and confirmatory factor analysis too. Results indicated that Cronbach’s alpha for scale is 0/96 and all of subscales have high degree of alpha too. Also factor analysis with principal axis and promax rotation indicated three components similar to what mentioned by designers in original study that these factors overall explained 71/04 percent of the variance in data. Confirmatory factor analysis of scale indicates that three extracted components structure have good fit to data, too. Findings of this study emphasize that Omnibus Trust Scaleis a reliable and valid instrument to assess faculty trust of Iranian teachers.

This study aimed to examine the psychometric features (validity and reliability) of the short form of Need for Cognition Scale (NFS) in high school students. For this purpose, 392 students (168 male and 224 female) of Shiraz high schools were selected by multistage cluster sampling method. They, then, responded to the self-report need for cognition scale developed by Cacciopo et al. To assess the construct validity of this scale, confirmatory factor analysis and internal consistency was used. Moreover, Cronbach's alpha coefficient was used to evaluate the reliability of the scale. Generally, the goodness of fit characteristics of the confirmatory factor analysis model indicated a good fit of the data with factor structure of the need for cognition scale. Also, internal consistency method indicates the construct validity of the scale. The Cronbach's alpha coefficient indicates the stability of the measurement of the scale. Based on these results, one can use the need for cognition scale developed by Cacciopo et al. as an acceptable measurement tool in the study of high school students.

This study was launched aiming at evaluating the psychometric features (validity and reliability) of the Need for Closure Scale (NFCS) in high school students. Forthispurpose, 392 students (168 male and 224 female) of Shirazhigh schoolswere selectedby multistagecluster samplingmethod. They, then, responded to the self-report need for closure scale developed by DeBacker & Crowson. To assess the construct validityof thisscale, confirmatory factor analysi sandinternal consistency was used. Moreover, Cronbach's alpha coefficient was usedtoevaluate the reliability ofthe scale. Generally, the goodness of fit indices of the confirmatory factor analysis modelindicated a relatively goodfit ofthe datawith factor structure of the need for closure scale, after deleting some items, confirming the existence of preference for structure and preference for certainty as two components of need for closure. Also, internal consistency method indicates the construct validityof thescale. The Cronbach's alpha coefficientindicates thestability of themeasurement of the scale. Based onthese results, one can use the need for closure scale developed by DeBacker&Crowsonas an acceptablemeasurement toolin thestudyofhigh school students inside the country.

The aim of this study was to examine reliability and validity of Persian version of Chronic Stress Scale (CSS) among a sample of first degree relatives of patients with type II diabetes. English version of CSS was transformed into a Persian questionnaire after translation and back-translation and then was used among 199 participants of the research. In order to explore test-retest reliability of CSS, 30 subjects answered the questions again, 8 to 11 weeks after first testing. Internal consistency of CSS in terms of alpha coefficient was obtained 0.87. Correlation coefficients between CSS and type D personality scale, neuroticism subscale of EPQ-RS, depression subscale of DAS, and anger and hostility subscale of SCL-90-R was obtained 0.36, 0.34, 0.38, and 0.30 respectively. Test-retest reliability with 8- to 11-week distance between two testing periods was 0.73. Based on results of our study, Persian version of CSS has the required psychometric properties for application in psychological studies on Iranian populations at risk of chronic diseases.

The aim of this study was to test the factor structure and internal consistency of the 12-item identity subscale of Erikson Psychosocial Stage Inventory (EPSI; Rosenthal, Gurney, & Moor, 1981). The sample consisted of 594 students (297 females, 297 males, age group 12-13). Exploratory factor analysis identified two factors accounting for 39.93% of the variance: Identity coherence (24.66%) and identity confusion (15.27%). Internal consistency of the identity coherence and identity confusion factors were 0.694 and 0.632, respectively. Confirmatory factor analysis results indicated that the two factor model fit the data better than one factor model.