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Related Experiment Video

Updated: Mar 26, 2026

A Two-interval Forced-choice Task for Multisensory Comparisons

A Two-interval Forced-choice Task for Multisensory Comparisons

Published on: November 9, 2018

Measuring Ability, Speed, or Both? Challenges, Psychometric Solutions, and What Can Be Gained From Experimental

Frank Goldhammer¹

¹German Institute for International Educational Research (DIPF), Centre for Technology Based Assessment (TBA) Centre for International Student Assessment (ZIB).

Measurement : Interdisciplinary Research and Perspectives

|January 26, 2016

Summary

This study introduces a new framework for understanding how speed and ability interact in tests. Controlling item response times is key to accurately measuring individual differences in this speed-ability trade-off.

Keywords:

ability experimental control item response modeling response time modeling speed speed-ability trade-off

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Related Experiment Videos

Last Updated: Mar 26, 2026

A Two-interval Forced-choice Task for Multisensory Comparisons

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Published on: November 9, 2018

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A Task for Assessing the Impact of a Partner on the Speed and Accuracy of Motor Performance in Rats

A Task for Assessing the Impact of a Partner on the Speed and Accuracy of Motor Performance in Rats

Published on: October 17, 2019

Area of Science:

Psychometrics
Cognitive Psychology

Background:

Ability tests face item difficulty challenges, while speed tests require rapid completion of easy items.
Existing measurement models struggle to account for the interplay between speed and ability.

Purpose of the Study:

To propose a conceptual framework for understanding performance based on speed and ability.
To address measurement challenges arising from the speed-ability compromise within individuals.
To integrate response time control into psychometric models.

Main Methods:

Conceptual framework development.
Discussion of existing psychometric models.
Argument for controlling item response times.

Main Results:

A framework is proposed to represent performance as a function of between-person differences in speed and ability.
The framework highlights the within-person speed-ability compromise.
Controlling item response times is identified as crucial for accurate measurement.

Conclusions:

Accurate assessment of individual differences in the speed-ability trade-off necessitates controlling item response times.
Capturing response behavior solely through the response variable can resolve issues in traditional measurement approaches.