Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Noncompartmental Analysis: Miscellaneous Pharmacokinetic Parameters00:54

Noncompartmental Analysis: Miscellaneous Pharmacokinetic Parameters

451
The noncompartmental approach is a widely used method in pharmacokinetics to assess drugs' behaviors in the body. It considers several factors, including clearance, bioavailability, and total volume of distribution.
One key aspect of the noncompartmental approach is determining a drug's total clearance. This can be done by dividing the drug dose by the area under the concentration-time curve from zero to infinity. The area under the concentration-time curve represents the drug's...
451
Parallel Resonance01:23

Parallel Resonance

557
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
557
Parallel Processing01:20

Parallel Processing

713
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
713
Resistors In Parallel01:23

Resistors In Parallel

6.1K
Resistors are in parallel when one end of all the resistors are connected to a continuous wire of negligible resistance and the other end of all the resistors are also connected to one another through a continuous wire of negligible resistance. In the case of a parallel configuration, the potential drop across each resistor is the same. Current through each resistor can be found using Ohm’s law, I = V/R, where the voltage is constant across each resistor. The sum of the individual currents...
6.1K
Series and Parallel Capacitors01:14

Series and Parallel Capacitors

9.3K
Capacitors, fundamental components in electronic circuits, can be connected in series and/or parallel configurations. Each configuration has different impacts on the overall behavior of the circuit.
First, consider capacitors connected in series to a battery. In this configuration, the plate connected to the battery's positive terminal develops a positive charge, while the plate attached to the negative terminal becomes negatively charged. An equal magnitude of charge is induced on the...
9.3K
Parallel-axis Theorem01:06

Parallel-axis Theorem

8.3K
The parallel-axis theorem provides a convenient and quick method of finding the moment of inertia of an object about an axis parallel to the axis passing through its center of mass. Consider a thin rod as an example. There is a striking similarity between the process of finding the moment of inertia of a thin rod about an axis through its middle, where the center of mass lies, and about an axis through its end using the conventional method. In the conventional method, the concept of linear mass...
8.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Treating Noneffortful Responses as Missing.

Educational and psychological measurement·2024
Same author

Item Parameter Recovery: Sensitivity to Prior Distribution.

Educational and psychological measurement·2024
Same author

A Note on the Relation Between the Angle of the Reference Composite and Liu, Li, and Liu's Method 4 for Domain Scores.

Applied psychological measurement·2021
Same author

A Note on the Odds Ratio DIF Index.

Applied psychological measurement·2020

Related Experiment Video

Updated: Jan 30, 2026

Ubiquitin Chain Analysis by Parallel Reaction Monitoring
08:33

Ubiquitin Chain Analysis by Parallel Reaction Monitoring

Published on: June 17, 2020

4.0K

Revised Parallel Analysis With Nonnormal Ability and a Guessing Parameter.

Christine E DeMars1

  • 1James Madison University, Harrisonburg, VA, USA.

Educational and Psychological Measurement
|January 15, 2019
PubMed
Summary

Revised parallel analysis using two- and three-parameter models is effective for dichotomous items. Skewed ability distributions minimally impact unidimensional data but slightly reduce power for multidimensional data.

Keywords:
dichotomousdimensionalityitem response theoryparallel analysis

More Related Videos

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
07:45

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

3.9K
An Experimental Analysis of Children's Ability to Provide a False Report about a Crime
07:36

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime

Published on: May 3, 2016

9.0K

Related Experiment Videos

Last Updated: Jan 30, 2026

Ubiquitin Chain Analysis by Parallel Reaction Monitoring
08:33

Ubiquitin Chain Analysis by Parallel Reaction Monitoring

Published on: June 17, 2020

4.0K
The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
07:45

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

3.9K
An Experimental Analysis of Children's Ability to Provide a False Report about a Crime
07:36

An Experimental Analysis of Children's Ability to Provide a False Report about a Crime

Published on: May 3, 2016

9.0K

Area of Science:

  • Psychometrics
  • Educational Measurement
  • Statistical Modeling

Background:

  • Previous research validated revised parallel analysis for dichotomous items using a two-parameter model and normal ability distributions.
  • The current study extends this by examining two- and three-parameter models with both normal and skewed ability distributions.

Purpose of the Study:

  • To investigate the performance of revised parallel analysis with two- and three-parameter models under various ability distribution conditions (normal vs. skewed).
  • To assess the impact of skewed ability distributions on Type I error rates and statistical power in factor analysis.

Main Methods:

  • Simulations were conducted using both two- and three-parameter logistic models.
  • Ability distributions included normal, skewed, and kurtotic variations.
  • Data were analyzed for both unidimensional and two-dimensional structures with varying sample sizes (e.g., N=400).

Main Results:

  • Minor skewness and kurtosis in ability distributions had negligible effects on Type I error for unidimensional data.
  • Power for two-dimensional data was slightly reduced with smaller sample sizes (N=400) under skewed conditions.
  • Applying a two-parameter model to three-parameter data inflated rejection rates for unidimensional data.
  • Using the correct three-parameter model decreased these unidimensional rejection rates but sometimes resulted in lower power compared to the two-parameter model.

Conclusions:

  • Revised parallel analysis demonstrates robustness to minor skewness in ability distributions for unidimensional data.
  • Model misspecification (e.g., using a two-parameter model for three-parameter data) significantly impacts results, particularly Type I error rates.
  • The choice of model parameterization is crucial for accurate factor analysis, especially with non-normal ability distributions.