scholarly journals Developing a Web Site Usability Scale: The validity and reliability analysis & implementation results

2011 ◽  
Vol 1 (2) ◽  
pp. 31-40 ◽  
Author(s):  
Ebru Kılıç Çakmak ◽  
Erhan Güneş ◽  
Serdar Çiftçi ◽  
Mutlu Tahsin Üstündağ

The aim of this research was to develop a "User perception based web site usability scale" to be used for assigning usability of web sites based on user perception. After a literature review dimensions of usability were found out. Subsequently a pool of items including a total of 53 items was collected in this context. The draft form which was developed according to 7 subject matter experts' opinions, was applied on 245 students who had been using Gazi University Distance Education Vocational College LMS (Learning Management System) web site.  Exploratory and confirmatory factor analysis methods were used to determine construct validity. For reliability, Cronbach alpha internal consistency coefficient was taken into account; corrected item-total correlation and t-test were used to examine significance between item averages of top %27 and bottom %27 groups. As a result of the analysis process, the user perception based web site usability scale, with a construct of four factors including of 25 items, was developed. Finally, the scale was applied on 239 e-learners in order to determine the usability level of the LMS web site which they had been using and results were reported.

2021 ◽  
Vol 6 (2) ◽  
pp. 179-195
Author(s):  
Iredho Fani Reza

The purpose of this study is to develop a measurement scale for phone snubbing among Moslem youth in the era of the industrial revolution 4.0. This research is used a quantitative survey research with the number of respondents N = 503 who were Moslem youths at a university in the Republic of Indonesia which was determined by multistage sampling technique. The instrument used is the Phone Snubbing Scale (Phub-S) which consists of three dimensions - ignore others, dependency on gadgets and social disconnectedness. In analyzing the data through the process of building validity consisting of confirmatory factor analysis and total correlation of corrected items, analyzing internal consistency reliability using Cronbach's alpha technique. The results showed that the Phone Snubbing Scale (Phub-S) has a good item validity and reliability test as a measurement scale for phone insulting behavior young Moslems in the era of the industrial revolution 4.0. The recommended Phub-S items totaling 45 items that have been fulfilled are valid based on testing confirmatory factor analysis (CFA) technique (standardized solution (SS) > 0.4 and T-Values > 1.96), Corrected Item-Total Correlation ≥ 0.30 and with a scale reliability value. 0.932 (Cronbach's Alpha value> 0.8).


Author(s):  
Hale Sezer

This study aims to develop the "Coaching Process Evaluation Scale" (CPES) to be used to assess the coaching process during nursing students' skill practices. This methodological study was carried out in several stages. The exploratory factor analysis was performed on the data collected during the process using the SPSS data package, and the validity and reliability data of the scale were obtained. In the analysis of the data, the Kaiser-Meyer-Olkin (KMO) coefficient of the scale was 0.96.According to the Barlett test, the p value was 0.000. For the reliability, the lowest and highest item total correlation values were 0.493 and 0.769 respectively, and the Cronbach Alpha score was 0.962.  Analyses indicated that the validity and reliability of the “CPES” developed in the present study were high. The use of this scale in future studies and the confirmatory factor analysis will enhance these characteristics of the scale.  Keywords: Coaching; coaching process; evaluation; nursing education; scale.   


2019 ◽  
Vol 8 (6) ◽  
pp. 100
Author(s):  
Hüseyin Aslan ◽  
Cevat Elma ◽  
Yüksel Gündüz

The aim of this study is to develop a valid and reliable scale, which measures disloyalty in the workplace. The population of the study consisted of teachers working in the central area of Samsun in Turkey during 2017-2018 academic year. 742 teachers, who volunteered to take part in the study, constituted the sample of the study, and they were selected randomly. In data analysis process, exploratory factor analysis, confirmatory factor analysis and reliability analysis were used.  According to the results of explanatory factor analysis, the scale was composed of 21 items and 2 sub-scales called manager disloyalty and colleague disloyalty and these two sub-dimensions have been explaining .86.7 of total variance. According to the results of confirmatory factor analysis, all items constituted a meaningful structure under related factors and factor loadings of all items were above .30. As for the reliability analysis, Cronbach Alfa, Guttman and Spearman Brown analyses were carried out and Cronbach Alfa coefficient of total points of the scale was found as .99; the Guttman coefficient was found as .89 and Spearman Brown coefficient was found as .89. This scale of which validity and reliability analysis were completed in this study can be used by researchers studying on disloyalty in the workplace as a data collection instrument. 


2020 ◽  
Vol 36 (2) ◽  
pp. 427-431
Author(s):  
Aurelie M. C. Lange ◽  
Marc J. M. H. Delsing ◽  
Ron H. J. Scholte ◽  
Rachel E. A. van der Rijken

Abstract. The Therapist Adherence Measure (TAM-R) is a central assessment within the quality-assurance system of Multisystemic Therapy (MST). Studies into the validity and reliability of the TAM in the US have found varying numbers of latent factors. The current study aimed to reexamine its factor structure using two independent samples of families participating in MST in the Netherlands. The factor structure was explored using an Exploratory Factor Analysis (EFA) in Sample 1 ( N = 580). This resulted in a two-factor solution. The factors were labeled “therapist adherence” and “client–therapist alliance.” Four cross-loading items were dropped. Reliability of the resulting factors was good. This two-factor model showed good model fit in a subsequent Confirmatory Factor Analysis (CFA) in Sample 2 ( N = 723). The current finding of an alliance component corroborates previous studies and fits with the focus of the MST treatment model on creating engagement.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Janiny Lima e Silva ◽  
Matheus de Sousa Mata ◽  
Saionara Maria Aires Câmara ◽  
Íris do Céu Clara Costa ◽  
Kleyton Santos de Medeiros ◽  
...  

Abstract Background The Lederman Prenatal Self-Evaluation Questionnaire (PSEQ) is used to assess psychosocial adaptation to pregnancy, labor, childbirth, and maternity. The PSEQ is a tool used in various countries and has been translated into Portuguese; however, it needs to be validated in Brazil. This study aimed to analyze the validity and reliability of the PSEQ in Brazilian pregnant women. Method This methodological validity study investigated internal consistency and reliability using Cronbach’s alpha and intraclass correlation coefficients. Construct validity was assessed using Pearson’s correlation between domains and confirmatory factor analysis. To assess concurrent validity, Pearson’s correlation between the different domains of the PSEQ and Prenatal Psychosocial Profile-Portuguese Version (PPP-VP) was determined. The level of significance was set at 5%. Results This study included 399 pregnant women in the northeastern region of Brazil. The internal consistency and reliability of the total PSEQ score were high (Cronbach's alpha = 0.89; intraclass correlation coefficient = 0.95). Validity analysis showed positive and significant correlations between all PSEQ domains, ranging from 0.14 to 0.56. Confirmatory factor analysis demonstrated the following values of goodness of fit: RMSEA = 0.05, SRMR = 0.08, CFI = 0.61, χ2/df = 1.77. The discriminant and concurrent validities of the PSEQ were confirmed. Conclusions The Portuguese version of the PSEQ has adequate psychometric properties and is a valid and reliable tool to evaluate psychosocial adaptation to pregnancy in Brazilian pregnant women.


2021 ◽  
Vol 15 (6) ◽  
pp. 2025-2030
Author(s):  
Maryam Seraji ◽  
Maryam Zahmatkeshan ◽  
Victoria Momen Abadi ◽  
Elham Nejadsadeghi

Background: Child obesity is one of the main health problems all across the world, which leads to mental and physical health problems. Various models are used in designing intervention to prevent child obesity, one of which is social-cognitive theory (SCT). The constructs of social-cognitive theory are commonly used for designing preventive interventions. However, there is no specific tool based on the constructs of social-cognitive theory to assess the factors associated with child obesity. Aim: The aim of this study was to investigate the validity and confirmatory factor analysis of a SCT-based questionnaire for assessing obesity preventing behaviors among 4-6 years old children. Method: A cross-sectional study was first conducted in 2016 on 240 preschool children aged 4-6 years in Behbahan city (a city in southwest Iran) to assess the obesity prevention behaviors among them using a SCT-based questionnaire. To investigate the validity and confirmatory factor analysis of the SCT-based questionnaire, content and face validity as well as forward-backward translation method were used. Reliability of the questionnaire was also measured by Cronbach’s alpha coefficient and Intra-class Correlation Coefficient (ICC). Construct validity was assured by confirmatory factor analysis. To measure the obesity prevention behaviors in 4-6 years old children, the construct of SCT, including environment, emotional coping, outcome expectations, goal setting and self-efficacy were used. Also, the obesity prevention behaviors used in the model included physical activity, consumption of fruit and vegetable, consumption of sugar-free drinks, and screen. Results: Results of this study confirmed the acceptable content and face validity of the SCT-based questionnaire. The results of confirmatory factor analysis also confirmed the factor loading of more than 0.3 for all variables; therefore, the SCT-based questionnaire had an acceptable validity and reliability. Conclusions: Since the SCT-based questionnaire had an acceptable validity and reliability, it can be used to assess the obesity prevention behaviors in 4-6 year old children, and also to design relevant educational interventions. Keywords: Validation, Social-Cognitive Theory, Behavior, Childhood obesity, Preschool, Prevention


Author(s):  
Moeini Babak ◽  
Barati Majid ◽  
Heidarimoghadam Rashid ◽  
Tapak Leili ◽  
Parsamajd Shahryar

Inadequate health literacy decreases physical activity. This study aimed to develop and examine psychometrics of physical activity health literacy in Iranian older adults. This methodological work was conducted in two phases. Phase 1 consisted of extensive studies review and qualitative study to extract and design the items. The psychometrics were measured in Phase 2 included content, faceconstruct validities, reliability, and stability. The collected data were analyzed in SPSS (version 25.0) and AMOS (version 24.0). The results of the exploratory factor analysis showed four factors— information evaluation, reading skill, perception, and decision making—and used information that explained 70.08% of the variance. The model’s fitness was supported by confirmatory factor analysis. Internal consistency based on Cronbach’s alpha was .89 with composite reliability >0.85. Stability was confirmed through the test–retest method and intraclass correlation coefficient (.89–1). Psychometrics of physical activity health literacy in Iranian older adults supported validity and reliability of the tool.


2021 ◽  
Vol 11 (1) ◽  
pp. 75-82
Author(s):  
İlayda Oylum Guleryuz ◽  
Figen Okçın

Purpose: A study was conducted to investigate the Turkish Validity and Reliability of the Insulin Initiation Attitudes Scale of individuals with Type 2 diabetes. Materials and methods: This methodologically planned study was conducted with 128 Type 2 diabetes mellitus patients who met the sampling criteria. Data collected using a personal information form to identify individuals diagnosed with diabetes and CH-ASIQ, which assessed their attitudes towards diabetes, and the form Insulin Therapy Attitude Scale parallel as a parallel form. For the statistical analysis of the data, Construct Validity, Exploratory Factor Analysis, and Kaiser-Meyer-Olkin test, Confirmatory Factor Analysis, Pearson, Gutmann, Split Half, Spearman, Cronbach Alpha coefficient methods were used. Results: It was statistically significant; it is seen that 14.1% of the participants were in the 41-50 age range, 37.5% were in the 51-60 age range, and 48.8% were 61 and over. According to Kaiser-Meyer-Olkin test, the result was found to be 0.626. According to the results of factor analysis, 4 factors have emerged which have Eigenvalues above 1 and explain 69.48% of the total variance. According to Confirmatory Factor Analysis, Structural Equation Modeling Results of the scale were found to be p=0.000. According to Cronbach Alpha result 0.756. Conclusion: There was a relationship between attitudes to having information about the treatment of diabetics and attitude, and there was the relationship between them. Effects of fear, pain on these findings were observed. The importance of education for a positive attitude was determined. The importance of patients' attitudes towards insulin therapy should be emphasized for adaptation to the disease.


2006 ◽  
Vol 23 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Simon Driver

The aim of the study was to provide evidence for the validity and reliability of the Physical Activity Affect Scale (PAAS; Lox, Jackson, Tuholski, Wasley, & Treasure, 2000) as a measure of exercise induced affect for adults with brain injuries. The PAAS is a 12-item measure of feeling states based on Russell’s (1980) conceptualization of affect. A confirmatory factor analysis was conducted on data from 193 participants with brain injuries who completed the PAAS following a single bout of exercise. Results identified four dimensions of affect (positive affect, negative affect, tranquility, and fatigue). Findings provide evidence for the validity and reliability of the PAAS as a measure of exercise induced affect for adults with brain injuries.


2021 ◽  
Vol 12 ◽  
Author(s):  
Changjiu He ◽  
Dongmei Wu ◽  
Lu Yang ◽  
Lei Yang ◽  
Yuchuan Yue

Grit, as a positive psychological trait, could affect the stability of nursing workforce and nurses’ physical and mental health continuously. The Short Grit Scale (Grit-S) with fewer items than the original Grit Scale was widely used to measure individual trait-level grit. However, the psychological properties of Grit-S among Chinese nurses have not been verified. A self-designed sociodemographic questionnaire was used to investigate 709 Chinese nurses in the study, and Grit-S, Big Five Inventory-44, Brief Self-Control Scale, 10-item Connor-Davidson resilience scale, and Task Performance Scale were adopted to collect information of grit, personality, self-control, resilience, and work performance. The confirmatory factor analysis, Pearson correlation analysis, hierarchical regression analysis, and multi-group confirmatory factor analysis were conducted to verify the psychometric properties of the Grit-S. The results demonstrated that the Grit-S had sound validity and reliability among Chinese nurse samples and had good measurement invariance across nurses in general hospitals and psychiatric hospitals. The results of this study provide confidence in using the grit measurement among Chinese nurse in the future.


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