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Retricted access

Research article

First published 2008-12

Test of Validity of Fitts' Index of Difficulty as a Measure of Task Difficulty

Sangbum Park, Mihyun Kim

Perceptual and Motor Skills

Retricted access

Research article

First published 1981-07

The Relative Difficulty Ratio—a Test and Item Index

David A. Frisbie

Educational and Psychological Measurement

Retricted access

Research article

First published 1979-12

Relationships Between the Item Difficulty and Discrimination Indexes

Lewis R. Aiken

Educational and Psychological Measurement

Retricted access

Research article

First published 1990-10

Reaction Time and Index of Difficulty in Target-Striking Tasks with Changes in Direction

Mark G. Fischman, W. Gregory Mucci

Perceptual and Motor Skills

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Other

First published 1978-10

Performance Time as Effected by Choice Uncertainity and Index of Difficulty

A. Raouf, J. Tsui

Proceedings of the Human Factors and Ergonomics Society Annual Meeting

Open access

Research article

First published 2023-10

Applicability of IOTN Index for Quality Assessment of Orthodontic Treatment Difficulty

Reem Alwakeel, Deena Barakah

Journal of Indian Orthodontic Society

Open access

Research article

First published 2020-4

Formulating a New Orthodontic Index: An Indian Board of Orthodontics Initiative

Ashwin Mathew George, Ketan K. Vakil, Aravinthrajkumar Govindaraj [...]

Journal of Indian Orthodontic Society

Retricted access

Research article

First published 2019-06

Breastfeeding Difficulties,Breastfeeding Duration,Maternal Body Mass Index,and Breast Anatomy: Are They Related?

Laurence Mangel, Francis B. Mimouni, Dror Mandel [...]

Breastfeeding Medicine

Retricted access

Research article

First published 1947-07

Prediction of the Difficulty Index of Objective-Type Spelling Items

C.W. Harris

Educational and Psychological Measurement

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Research article

First published 1968-04

An Index of an Individual's Agreement with Group-Determined Item Difficulties

Thomas F. Donlon, Frederic E. Fischer

Educational and Psychological Measurement

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