Follow
Steven W. Nydick
Steven W. Nydick
Lead Assessment Scientist, Duolingo
Verified email at duolingo.com - Homepage
Title
Cited by
Cited by
Year
The wishart and inverse wishart distributions
SW Nydick
Electronic Journal of Statistics 6 (1-19), 2012
642012
Comparing two algorithms for calibrating the restricted non-compensatory multidimensional IRT model
C Wang, SW Nydick
Applied Psychological Measurement 39 (2), 119-134, 2015
462015
catIrt: An R package for simulating IRT-based computerized adaptive tests
SW Nydick
R package version 0.5-0, 2014
38*2014
Duolingo english test: technical manual
R Cardwell, GT LaFlair, B Settles
Duolingo Research Report, 2022
342022
A hybrid simulation procedure for the development of CATs
SW Nydick, DJ Weiss
Proceedings of the 2009 GMAC Conference on Computerized Adaptive Testing …, 2009
242009
On longitudinal item response theory models: A didactic
C Wang, SW Nydick
Journal of Educational and Behavioral Statistics 45 (3), 339-368, 2020
222020
Multidimensional mastery testing with CAT
SW Nydick
University of Minnesota, 2013
132013
Accuracy and efficiency in classifying examinees using computerized adaptive tests: an application to a large scale test
SW Nydick, Y Nozawa, R Zhu
annual meeting of the National Council on Measurement in Education …, 2012
92012
The sequential probability ratio test and binary item response models
SW Nydick
Journal of Educational and Behavioral Statistics 39 (3), 203-230, 2014
72014
Practical considerations when building concordances between English tests
RL Cardwell, SW Nydick, JR Lockwood, AA von Davier
Language Testing 41 (1), 192-202, 2024
42024
The ratio of (independent) exponential random variables
SW Nydick
May, 2012
42012
Considering inter-test relationships in high-stakes admissions testing: The case of English
R Cardwell, S Nydick, JR Lockwood
ALTE 8th International Conference, Madrid, 2023
12023
Finding time in language assessments: Maximizing measurement properties by unit of testing time
S Goodwin, GT LaFlair, JR Lockwood, SW Nydick, AA von Davier
2023
练习测试中的粗心案例检测
S Nydick
Chinese/English Journal of Educational Measurement and Evaluation| 教育测量 …, 2023
2023
Detecting Careless Cases in Practice Tests
S Nydick
Chinese/English Journal of Educational Measurement and Evaluation| 教育测量 …, 2023
2023
Intro to R for Psychologists
SW Nydick
2013
The Relationship Between Spearman Brown and Cronbach’s Alpha
SW Nydick
2012
Latent Growth Models
SW Nydick
2012
IRT Parameter Estimation
SW Nydick
2012
A Different (ial) Way
MD Again, SW Nydick
2012
The system can't perform the operation now. Try again later.
Articles 1–20