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.

Item-Response-Theory Analysis of Two Scales for Self-Efficacy for Exercise Behavior in People With Arthritis

2011 ◽  
Vol 19 (3) ◽  
pp. 239-248 ◽  
Author(s):  
Thelma J. Mielenz ◽  
Michael C. Edwards ◽  
Leigh F. Callahan
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Item Response Theory ◽  
Item Response ◽  
Self Efficacy ◽  
Exercise Behavior ◽  
Response Theory ◽  
Item Response Theory Analysis ◽  
Graded Response ◽  
Item Scale

Benefits of physical activity for those with arthritis are clear, yet physical activity is difficult to initiate and maintain. Self-efficacy is a key modifiable psychosocial determinant of physical activity. This study examined two scales for self-efficacy for exercise behavior (SEEB) to identify their strengths and weaknesses using item response theory (IRT) from community-based randomized controlled trials of physical activity programs in adults with arthritis. The 2 SEEB scales included the 9-item scale by Resnick developed with older adults and the 5-item scale by Marcus developed with employed adults. All IRT analyses were conducted using the graded-response model. IRT assumptions were assessed using both exploratory and confirmatory factor analysis. The IRT analyses indicated that these scales are precise and reliable measures for identifying people with arthritis and low SEEB. The Resnick SEEB scale is slightly more precise at lower levels of self-efficacy in older adults with arthritis.

scholarly journals Item Response Theory Analysis of the Texas Functional Living Scale

2020 ◽  
Author(s):  
Deborah A Lowe ◽  
John F Linck
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Functional Impairment ◽  
Item Difficulty ◽  
Clinical Sample ◽  
Functional Abilities ◽  
Response Theory ◽  
Item Parameters ◽  
Item Response Theory Analysis ◽  
Graded Response

Abstract Objective The Texas Functional Living Scale (TFLS) is a performance-based measure of functional abilities assessing the domains of time, money and calculation, communication, and memory. It is likely that certain items are more sensitive at different levels of functional impairment, with some signaling milder degrees of functional difficulty. This study analyzed psychometric characteristics of individual TFLS items using item response theory (IRT) in an outpatient clinical sample. Method In total, 270 adult outpatients completed the TFLS during clinical neuropsychological evaluation. IRT analysis using 2PL and graded response model was applied to the TFLS. Results Item parameters, item characteristic curves, and information curves were produced. Item difficulty (a) parameters ranged from 1.05 to 2.23, and item discrimination (b) parameters ranged from −4.11 to 0.51. Conclusions TFLS items were differentially sensitive along the continuum of functional impairment. Items that were most sensitive to milder degrees of functional impairment involved clock drawing, microwave programming, financial calculation, and prospective memory. Other items that were optimally precise in more severe degrees of functional impairment involved interacting with a calendar and a relatively simple financial calculation task. These findings suggest that the ability to pass at least some of the items on the TFLS may not necessarily reflect fully intact functional abilities. Certain TFLS items may be able to detect the presence of subtle functional difficulties.

scholarly journals Consumer satisfaction and item response theory: creating a measurement scale

2012 ◽  
Vol 19 (2) ◽  
pp. 287-302 ◽  
Author(s):  
Silvana Ligia Vincenzi Bortolotti ◽  
Fernando de Jesus Moreira Junior ◽  
Antonio Cezar Bornia ◽  
Afonso Farias de Sousa Júnior ◽  
Dalton Francisco de Andrade
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Consumer Satisfaction ◽  
Latent Trait ◽  
Measurement Scale ◽  
Response Theory ◽  
Additional Information ◽  
Institutional Planning ◽  
Graded Response ◽  
Efficiency And Effectiveness

Today, people have increasingly demanded more from the state and enterprises. Consumer satisfaction is not an organizational option, but rather a matter of survival for any institution. The quest for measurement of consumer satisfaction has been ongoing in many areas of research, and researchers have concentrated efforts to demonstrate the psychometric quality of their measurements. However, the techniques employed by these commitments have not kept pace with the advances in psychometric theory and methods. The Item Response Theory (IRT) is an approach used for assessing latent trait. It is commonly used in educational and psychological tests and provides additional information beyond that obtained from classic psychometric techniques. This article presents a model of cumulative application of item response theory to measure the extent of students' satisfaction with their courses by creating a measurement scale. The Graded Response Model was used. The results demonstrate the effectiveness of this theory in measuring satisfaction since it places both items as individuals on the same scale. This theory may be valuable in the evaluation of customer satisfaction and many other organizational phenomena. The findings may help the decision maker of an enterprise with the correction of flows, processes, and procedures, and, consequently, it may help generate increased efficiency and effectiveness in daily tasks and in event management business. Finally, the information obtained from the analysis can play a role in the development and/or evaluation of institutional planning.

scholarly journals Item Response Theory Analysis of Two Questionnaire Measures of Arthritis-Related Self-Efficacy Beliefs from Community-Based US Samples

Arthritis ◽  
2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Thelma J. Mielenz ◽  
Michael C. Edwards ◽  
Leigh F. Callahan
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Self Efficacy ◽  
Response Theory ◽  
Theory Analysis ◽  
Community Based ◽  
Item Parameters ◽  
Item Response Theory Analysis ◽  
Graded Response ◽  
Active Living Every Day

Using item response theory (IRT), we examined the Rheumatoid Arthritis Self-efficacy scale (RASE) collected from a People with Arthritis Can Exercise RCT (346 participants) and 2 subscales of the Arthritis Self-efficacy scale (ASE) collected from an Active Living Every Day (ALED) RCT (354 participants) to determine which one better identifies low arthritis self-efficacy in community-based adults with arthritis. The item parameters were estimated in Multilog using the graded response model. The 2 ASE subscales are adequately explained by one factor. There was evidence for 2 locally dependent item pairs; two items from these pairs were removed when we reran the model. The exploratory factor analysis results for RASE showed a multifactor solution which led to a 9-factor solution. In order to perform IRT analysis, one item from each of the 9 subfactors was selected. Both scales were effective at measuring a range of arthritis SE.

scholarly journals The Revised Mood Rhythm Instrument: A Large Multicultural Psychometric Study

2021 ◽  
Vol 10 (3) ◽  
pp. 388
Author(s):  
Melissa Alves Braga de Oliveira ◽  
Euclides de Mendonça Filho ◽  
Alicia Carissimi ◽  
Luciene Lima dos Santos Garay ◽  
Marina Scop ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Item Response Theory ◽  
Network Analysis ◽  
Psychometric Properties ◽  
Item Response ◽  
Response Theory ◽  
Item Response Theory Analysis ◽  
Increased Risk ◽  
Psychometric Analyses ◽  
Self Reporting Questionnaire

Background: Recent studies with the mood rhythm instrument (MRhI) have shown that the presence of recurrent daily peaks in specific mood symptoms are significantly associated with increased risk of psychiatric disorders. Using a large sample collected in Brazil, Spain, and Canada, we aimed to analyze which MRhI items maintained good psychometric properties across cultures. As a secondary aim, we used network analysis to visualize the strength of the association between the MRhI items. Methods: Adults (n = 1275) between 18–60 years old from Spain (n = 458), Brazil (n = 415), and Canada (n = 401) completed the MRhI and the self-reporting questionnaire (SRQ-20). Psychometric analyses followed three steps: Factor analysis, item response theory, and network analysis. Results: The factor analysis indicated the retention of three factors that grouped the MRhI items into cognitive, somatic, and affective domains. The item response theory analysis suggested the exclusion of items that displayed a significant divergence in difficulty measures between countries. Finally, the network analysis revealed a structure where sleepiness plays a central role in connecting the three domains. These psychometric analyses enabled a psychometric-based refinement of the MRhI, where the 11 items with good properties across cultures were kept in a shorter, revised MRhI version (MRhI-r). Limitations: Participants were mainly university students and, as we did not conduct a formal clinical assessment, any potential correlations (beyond the validated SRQ) cannot be ascertained. Conclusions: The MRhI-r is a novel tool to investigate self-perceived rhythmicity of mood-related symptoms and behaviors, with good psychometric properties across multiple cultures.

Introduction to bifactor polytomous item response theory analysis

2017 ◽  
Vol 60 ◽  
pp. 41-63 ◽  
Author(s):  
Michael D. Toland ◽  
Isabella Sulis ◽  
Francesca Giambona ◽  
Mariano Porcu ◽  
Jonathan M. Campbell
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Response Theory ◽  
Theory Analysis ◽  
Polytomous Item ◽  
Item Response Theory Analysis ◽  
Polytomous Item Response Theory ◽  
Polytomous Item Response
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