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What is Item Response Theory? by Nick Shryane 

methodsMcr
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Item Response Theory (IRT) comprises a theory of measurement and a family of statistical models that aim to provide justification and evidence for the reliability and validity of multivariate data. This talk introduces the fundamental concepts and models of IRT, and provides a starting point for researchers wanting to use IRT in their work.
For more methods resources see:
www.methods.manchester.ac.uk

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7 авг 2024

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Комментарии : 10   
@andrewmiller6049
@andrewmiller6049 Год назад
Brilliant summary. So many thanks
@zerihunanibo9949
@zerihunanibo9949 3 года назад
Really your presentation is good ,thank you!
@LukaszVT40k
@LukaszVT40k 8 лет назад
Great presentation, thanks for uploading!
@f9w99
@f9w99 12 лет назад
What Statistical program do you use to tabulate the data? (Minitab, SPSS, etc) Great presentation by the way. Thanks!
@inasantigana1858
@inasantigana1858 4 года назад
How to get difficulty value?
@ez4u2beme
@ez4u2beme 7 лет назад
Be advised the equation that you presented for the 1PL and 2PL models, Y = a*theta - b, is not accurate. The correct model distributes the discrimination parameter across the deviate, i.e., Y = a(theta - b). The logit now become a*theta + c, where c = -a*b. Notwithstanding the aforementioned, I thought it was a good presentation.
@ho_zzang2
@ho_zzang2 3 месяца назад
도밤님 재미있어요
@teamncrm3480
@teamncrm3480 6 лет назад
Item response theory
@enapeusman4997
@enapeusman4997 Год назад
Good presentation but video too lenty and thus can affect understanding
@heidimacdougall6441
@heidimacdougall6441 3 года назад
Wow... British students clap when their professor finishes
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