Modeling Differences in Test-Taking Motivation: Exploring the Usefulness of the Mixture Rasch Model and Person-Fit Statistics

2013 ◽  
pp. 357-370 ◽  
Author(s):  
Marie-Anne Mittelhaëuser ◽  
Anton A. Béguin ◽  
Klaas Sijtsma
Keyword(s):  
Rasch Model ◽  
Person Fit ◽  
Test Taking ◽  
Fit Statistics

Exact person fit indexes for the rasch model for arbitrary alternatives

Psychometrika ◽  
2000 ◽  
Vol 65 (1) ◽  
pp. 29-42 ◽  
Author(s):  
Ivo Poncny
Keyword(s):  
Rasch Model ◽  
Person Fit ◽  
Fit Indexes ◽  
The Rasch Model

scholarly journals Investigating Psychometric Properties of the Arm Activity Measure – Thai Version (ArmA-TH) Sub-Scales Using the Rasch Model

2020 ◽  
Author(s):  
Montana Buntragulpoontawee ◽  
Jeeranan Khunachiva ◽  
Patreeya Euawongyarti ◽  
Nahathai Wongpakaran ◽  
Tinakon Wongpakaran ◽  
...  
Keyword(s):  
Rasch Model ◽  
Rasch Analysis ◽  
Measurement Properties ◽  
Brain Disorders ◽  
Local Independence ◽  
Fit Statistics ◽  
Active Function ◽  
Item Functioning ◽  
The Rasch Model ◽  
Activity Measure

Abstract Background: This study investigated the ArmA-TH measurement properties based on item response theory, using the Rasch model. Methods: Patients with upper limb hemiplegia resulting from cerebrovascular and other brain disorders were asked to completed the ArmA-TH questionnaire. Rasch analysis was performed to test how well the ArmA-TH passive and active function sub-scales fit the Rasch model by investigating unidimensionality, response category functioning, reliability of the person and item, and differential item functioning (DIF) for age, sex and education. Results: Participants had stroke or other acquired brain injury (n=185) and the majority were men 126(68.1%), with a mean age of 55(SD 22). Most patients 91(49.2%) graduated elementary/primary school. For the ArmA-TH passive function scale, all items had acceptable fit statistics. The scale’s unidimensionality, and local independence were supported. The reliability was acceptable. Disordered threshold was found in five items, none was DIF. For the ArmA-TH active function scale, one item was misfitting and three were locally dependent. The reliability was good. DIF was not found. All items had disordered thresholds, and data fitted the Rasch model better after rescoring.Conclusions: Both sub-scales of ArmA-TH fitted the Rasch model, and are valid and reliable. The disordered thresholds should be further investigated.

The Null Distribution of Person-Fit Statistics for Conventional and Adaptive Tests

1999 ◽  
Vol 23 (4) ◽  
pp. 327-345 ◽  
Author(s):  
Edith M. L. A. Van Krimpen-Stoop ◽  
Rob R. Meijer
Keyword(s):  
Null Distribution ◽  
Person Fit ◽  
Adaptive Tests ◽  
Fit Statistics

scholarly journals The Effect of Person Misfit on Item Parameter Estimation and Classification Accuracy: A Simulation Study

2020 ◽  
Vol 10 (11) ◽  
pp. 324
Author(s):  
Amin Mousavi ◽  
Ying Cui
Keyword(s):  
Item Parameter ◽  
Response Patterns ◽  
Fit Indices ◽  
Person Fit ◽  
High Performing ◽  
Fit Statistics ◽  
Aberrant Response Patterns ◽  
Item Parameters ◽  
Item Level ◽  
Item Parameter Estimation

Often, important decisions regarding accountability and placement of students in performance categories are made on the basis of test scores generated from tests, therefore, it is important to evaluate the validity of the inferences derived from test results. One of the threats to the validity of such inferences is aberrant responding. Several person fit indices were developed to detect aberrant responding on educational and psychological tests. The majority of the person fit literature has been focused on creating and evaluating new indices. The aim of this study was to assess the effect of aberrant responding on the accuracy of estimated item parameters and refining estimations by using person fit statistics by means of simulation. Our results showed that the presence of aberrant response patterns created bias in the both b and a parameters at the item level and affected the classification of students, particularly high-performing students, into performance categories regardless of whether aberrant response patterns were present in the data or were removed. The results differed by test length and the percentage of students with aberrant response patterns. Practical and theoretical implications are discussed.

scholarly journals Derivation and Applicability of Asymptotic Results for Multiple Subtests Person-Fit Statistics

2016 ◽  
Vol 40 (4) ◽  
pp. 274-288 ◽  
Author(s):  
Casper J. Albers ◽  
Rob R. Meijer ◽  
Jorge N. Tendeiro
Keyword(s):  
Person Fit ◽  
Asymptotic Results ◽  
Fit Statistics

The Power of Rasch Person-Fit Statistics in Detecting Unusual Response Patterns

1997 ◽  
Vol 21 (3) ◽  
pp. 215-231 ◽  
Author(s):  
Mao-neng Fred Li ◽  
Stephen Olejnik
Keyword(s):  
Response Patterns ◽  
Person Fit ◽  
Fit Statistics
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