scholarly journals Body Appreciation Scale (BAS-2): measurement invariance across genders and item response theory examination

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Daniel Zarate ◽  
Joshua Marmara ◽  
Camilla Potoczny ◽  
Warwick Hosking ◽  
Vasileios Stavropoulos
Keyword(s):  
Item Response Theory ◽  
Measurement Invariance ◽  
Item Response ◽  
The United States ◽  
The Body ◽  
Body Appreciation ◽  
Response Theory ◽  
Clinical Interviews ◽  
Graded Response ◽  
Males And Females

Abstract Background The present study considers a measure of positive body image, the Body Appreciation Scale-2, which assesses acceptance and/or favourable opinions towards the body (BAS-2). Potential variations of the psychometric properties of the scale across males and females, as well as across its different items invite for further investigation. The present study contributes to this area of knowledge via the employment of gender Measurement Invariance (MI) and Item Response Theory (IRT) analyses. Methods A group of 386 adults from Australia, Canada, New Zealand, Ireland, the United Kingdom, and the United States of America (USA) were assessed online (N = 394, 54.8% men, 43.1% women, Mage = 27.48; SD = 5.57). Results MI analyses observed invariance across males and females at the configural level, and non-invariance at the metric level. Further, the graded response model employed to observe IRT properties indicated that all items demonstrated, although variable, strong discrimination capacity. Conclusions The items showed increased reliability for latent levels of ∓ 2 SD from the mean level of Body Appreciation (BA). Gender comparisons based on BAS-2 should be cautiously interpreted for selected items, due to demonstrating different metric scales and same scores indicating different severity. The BAS-2 may also not perform well for clinically low and high BA levels. Thus, it should optimally be accompanied by clinical interviews for formal assessment in such cases.

scholarly journals Body Appreciation Scale (BAS-2): Measurement Invariance across Genders and Item Response Theory Examination.

2021 ◽  
Author(s):  
Daniel Zarate ◽  
Joshua Marmara ◽  
Camilla Potoczny ◽  
Warwick Hosking ◽  
Vasielios Stavropoulos
Keyword(s):  
Item Response Theory ◽  
Measurement Invariance ◽  
Item Response ◽  
The Body ◽  
Body Appreciation ◽  
Response Theory ◽  
Differential Functioning ◽  
Males And Females ◽  
The Mean ◽  
Two Parameter

Abstract Background: The present study considers a measure of positive body image, the Body Appreciation Scale-2, which assesses acceptance and/or favourable opinions towards the body (BAS-2[29]). Differential functioning of the scale across the two genders, as well as its items, has not been excluded. The present study contributes to this area of knowledge via the employment of gender Measurement Invariance (MI) and Item Response Theory (IRT) analyses. Methods: A group of 386 adults from the community were assessed (N = 394, 54.8% men, 43.1% women, M age = 27.48; SD = 5.57). Results: MI analysis observed invariance across males and females at the configural level, and non-invariance at the metric level. Further, the two-parameter logistic model employed to observe IRT properties indicated that all items demonstrated, although variable, strong discrimination capacity. Conclusions: The items showed increased reliability for latent levels of ∓ 2 SD from the mean level of Body Appreciation. The implications and interpretations of the findings for clinical practice are discussed.

Warwick Edinburgh Mental Well-Being Scale (WEMWBS): Measurement Invariance Across Genders And Item Response Theory Examination

2021 ◽  
Author(s):  
Joshua Marmara ◽  
Daniel Zarate ◽  
Jeremy Vassallo ◽  
Rhiannon Patten ◽  
Vasileios Stavropoulos
Keyword(s):  
Item Response Theory ◽  
Measurement Invariance ◽  
Item Response ◽  
Community Sample ◽  
Well Being ◽  
The United States ◽  
Subjective Well Being ◽  
Response Theory ◽  
Males And Females ◽  
Mental Well Being

Abstract Background: The Warwick Edinburgh Mental Well-Being Scale (WEMWBS) is a measure of subjective well-being and assesses eudemonic and hedonic aspects of well-being. However, differential scoring of the WEMWBS across gender and its precision of measurement has not been examined. The present study assesses the psychometric properties of the WEMWBS using Measurement Invariance (MI) between males and females and Item Response Theory (IRT) analyses. Method: A community sample of 386 adults from the United States of America (USA), United Kingdom, Ireland, Australia, New Zealand, and Canada were assessed online (N = 394, 54.8% men, 43.1% women, Mage = 27.48, SD = 5.57). Results: MI analyses observed invariance across males and females at the configural level and metric level but non-invariance at the scalar level. The graded response model conducted to observe item properties indicated that all items demonstrated, although variable, sufficient discrimination capacity.Conclusions: Gender comparisons based on WEMWBS scores should be cautiously interpreted for specific items that demonstrate different scalar scales and similar scores indicate different severity. The items showed increased reliability for latent levels of ∓ 2 SD from the mean level of SWB. The WEMWBS may also not perform well for clinically low and high levels of SWB. Including assessments for clinical cases may optimise the use of the WEMWBS.

scholarly journals A Multidimensional Item Response Theory Model for Continuous and Graded Responses With Error in Persons and Items

2021 ◽  
pp. 001316442199841
Author(s):  
Pere J. Ferrando ◽  
David Navarro-González
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Theory Model ◽  
Response Model ◽  
Response Theory ◽  
Continuous Response ◽  
Graded Responses ◽  
Graded Response ◽  
Continuous Responses ◽  
Differential Measurement Error

Item response theory “dual” models (DMs) in which both items and individuals are viewed as sources of differential measurement error so far have been proposed only for unidimensional measures. This article proposes two multidimensional extensions of existing DMs: the M-DTCRM (dual Thurstonian continuous response model), intended for (approximately) continuous responses, and the M-DTGRM (dual Thurstonian graded response model), intended for ordered-categorical responses (including binary). A rationale for the extension to the multiple-content-dimensions case, which is based on the concept of the multidimensional location index, is first proposed and discussed. Then, the models are described using both the factor-analytic and the item response theory parameterizations. Procedures for (a) calibrating the items, (b) scoring individuals, (c) assessing model appropriateness, and (d) assessing measurement precision are finally discussed. The simulation results suggest that the proposal is quite feasible, and an illustrative example based on personality data is also provided. The proposals are submitted to be of particular interest for the case of multidimensional questionnaires in which the number of items per scale would not be enough for arriving at stable estimates if the existing unidimensional DMs were fitted on a separate-scale basis.

Using Item Response Theory Models to Evaluate the Practice Environment Scale

2014 ◽  
Vol 22 (2) ◽  
pp. 323-341 ◽  
Author(s):  
Dheeraj Raju ◽  
Xiaogang Su ◽  
Patricia A. Patrician
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Information Criterion ◽  
Partial Credit Model ◽  
Practice Environment ◽  
Partial Credit ◽  
Response Theory ◽  
Environment Scale ◽  
Graded Response ◽  
Item Response Theory Models

Background and Purpose: The purpose of this article is to introduce different types of item response theory models and to demonstrate their usefulness by evaluating the Practice Environment Scale. Methods: Item response theory models such as constrained and unconstrained graded response model, partial credit model, Rasch model, and one-parameter logistic model are demonstrated. The Akaike information criterion (AIC) and Bayesian information criterion (BIC) indices are used as model selection criterion. Results: The unconstrained graded response and partial credit models indicated the best fit for the data. Almost all items in the instrument performed well. Conclusions: Although most of the items strongly measure the construct, there are a few items that could be eliminated without substantially altering the instrument. The analysis revealed that the instrument may function differently when administered to different unit types.

scholarly journals Item Response Theory Analysis of ADHD Symptoms in Children With and Without ADHD

Assessment ◽  
2016 ◽  
Vol 23 (6) ◽  
pp. 655-671 ◽  
Author(s):  
James J. Li ◽  
Steven P. Reise ◽  
Andrea Chronis-Tuscano ◽  
Amori Yee Mikami ◽  
Steve S. Lee
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Latent Trait ◽  
Dimensional Structure ◽  
Adhd Symptoms ◽  
Response Theory ◽  
Confirmatory Factor Analyses ◽  
Item Response Theory Analysis ◽  
Graded Response ◽  
Moderate Range

Item response theory (IRT) was separately applied to parent- and teacher-rated symptoms of attention-deficit/hyperactivity disorder (ADHD) from a pooled sample of 526 six- to twelve-year-old children with and without ADHD. The dimensional structure ADHD was first examined using confirmatory factor analyses, including the bifactor model. A general ADHD factor and two group factors, representing inattentive and hyperactive/impulsive dimensions, optimally fit the data. Using the graded response model, we estimated discrimination and location parameters and information functions for all 18 symptoms of ADHD. Parent- and teacher-rated symptoms demonstrated adequate discrimination and location values, although these estimates varied substantially. For parent ratings, the test information curve peaked between −2 and +2 SD, suggesting that ADHD symptoms exhibited excellent overall reliability at measuring children in the low to moderate range of the general ADHD factor, but not in the extreme ranges. Similar results emerged for teacher ratings, in which the peak range of measurement precision was from −1.40 to 1.90 SD. Several symptoms were comparatively more informative than others; for example, is often easily distracted (“Distracted”) was the most informative parent- and teacher-rated symptom across the latent trait continuum. Clinical implications for the assessment of ADHD as well as relevant considerations for future revisions to diagnostic criteria are discussed.

The Teen Screen for Dating Violence: An Item Response Theory Analysis

2019 ◽  
pp. 088626051986372 ◽  
Author(s):  
Kelly Emelianchik-Key ◽  
Kimberly F. Colvin
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Dating Violence ◽  
Teen Dating Violence ◽  
Response Theory ◽  
Item Functioning ◽  
Item Response Theory Analysis ◽  
Males And Females ◽  
Teen Dating ◽  
Study Participants

There continues to be a lack of fundamental knowledge regarding assessment, conceptualization, and treatment of teen dating violence (TDV). This deficiency of knowledge becomes even greater when examining gender differences in violence experience, perpetration, and perception. This article details the item response theory (IRT) analysis of the Teen Screen for Dating Violence (TSDV) and includes an assessment of differential item functioning (DIF) reported by gender. The TSDV examines adolescents’ perception, experience, perpetration, and exposure to violence, while also exploring support systems. The study participants included males and females between 13 and 21 years of age. Further refinement of the TSDV contributes to a more accurate and comprehensive conceptualization of TDV measurement. The results of this study support the use of the TSDV to assess for TDV in the adolescent population. The DIF analysis reveals that many of the items function differently for males and females, which provides evidence indicating that how TDV is experienced, perceived, and perpetrated differs across gender. The TSDV can assist clinicians in early TDV prevention, intervention, and education for males and females. It can also assist researchers in more accurately estimating perpetration, experience, and conceptualization of the three violence facets (emotional, physical, and sexual) in males and females. To further expand TDV knowledge, we offer recommendations for the use of the TSDV in various settings. The TSDV is a vital tool for clinicians, supervisors, and researchers to implement to mitigate the TDV epidemic and help bridge the gap in mental health services.

Sign in / Sign up

Export Citation Format

Share Document