#IRT

Jan R. Boehnkejrboehnke
2026-01-12

@guyjantic If you have not only one, but multiple questions, several item response models extend this logic by assuming a latent continuous variable:
they evaluate whether the responses to the questions can be reconstructed as ordered responses - and ordered in this case meaning 'with reference to this latent variable' (e.g., does being more in favour of rights for pregnant people consistently align with choosing higher categories in the individual question responses).

Oliver D. Reithmaierodr_k4tana@infosec.exchange
2026-01-05

#rstats #stats #IRT #scaledevelopment
Thinking about scale reliability lately.

An obvious thing to remember is that scale reliability (omega) is the upper bound of correlations it can meaningfully (!) have with anything else.

This is highly practical, because, in theory (I haven’t fleshed this out yet), this enables us to test construct validity pretty well by attenuating correlations with reliability. This has been done before, albeit (imho) slightly clumsily by Kristof (1983). They used a Spearman Brown approach based on an ideal correlation to establish thresholds a correlation must test against to conclude discriminant or convergent validity. The formula was threshold = rho_ideal * sqrt(rel_a * rel_b). This is less than ideal, because what an ideal correlation is is up to the researcher.

However, keeping the above fact in mind, we can do better. Kill thresholds and just make it a measure of relatedness altogether that is capped by the lower reliability.

Let’s call this Kappa = rho_real/sqrt(rel_a*rel_b).

This should (again, I haven’t tested this yet) give you two types of information right away:
1)If its >1, then your scale is off.
2)If it’s less than 1 it informs about construct validity. If it’s less than 0.5, probably discriminant, if it’s higher probably convergent. The extreme the score, the higher the confidence.

Please correct me If I'm doing some goofing here.

OsazuwaAkonedoosazuwaakonedo
2025-10-09

Video ~ Court Grants DCP Abba Kyari 2 Weeks Bail To Bury Mother ~ OsazuwaAkonedo

Court Grants DCP Abba Kyari 2 Weeks Bail To Bury Mother ~ OsazuwaAkonedo Federal High Court Sitting In Abuja Has Granted 2 Weeks Bail To Former Deputy Commissioner Of Police, DCP Abba Kyari To Enable Him Complete The Burial Rites Of His Mother, Yachilla Kyari Who Died On May 5, 2024 And Was Buried Same Day In Accordance With…

osazuwaakonedo.news/video-cour

MassivelyOPmassivelyop
2025-09-29
OsazuwaAkonedoosazuwaakonedo
2025-09-27

Court Grants DCP Abba Kyari 2 Weeks Bail To Bury Mother ~ OsazuwaAkonedo

Court Grants DCP Abba Kyari 2 Weeks Bail To Bury Mother ~ OsazuwaAkonedo Federal High Court Sitting In Abuja Has Granted 2 Weeks Bail To Former Deputy Commissioner Of Police, DCP Abba...

osazuwaakonedo.news/court-gran

Ratusaratusa
2025-07-07

Modal Kecil, Untung Besar: Peluang Usaha Fleksibel untuk Ibu Rumah Tangga

Modal Kecil, Untung Besar: Peluang Usaha Fleksibel untuk Ibu Rumah Tangga - Peran ibu rumah tangga () kini jauh lebih berkembang. Mereka tidak hanya mengelola rumah, tetapi banyak juga yang berkeinginan untuk , secara , dan berkontribusi nyata bagi keluarga. Keterbatasan modal dan waktu sering jadi kendala. Namun, dengan dan pemanfaatan #

pugur.com/modal-kecil-untung-b

Jan R. Boehnkejrboehnke
2025-06-26

Mentally preparing for being discussant for the panel "Making Routine Outcome Monitoring Very Brief" organised and moderated by Danilo Moggia.

We'll see psychometric data in different settings and groundwork for and going well beyond single-item assessments.
mastodon.social/deck/@jrboehnk

paulphflee
2025-03-02

Sometimes Dad would drop me off at City Hall so I could have a straight shot through on the 4 train. Other times I had to get the train from Parsons Boulevard or 74th Street/Roosevelt Avenue.






kurtshkurtsh
2024-06-12

Do you need a "one page" guide to investigate suspicious activity in Microsoft 365 and Microsoft Entra?

This guide contains the artifacts that Microsoft Incident Response hunts for and uses daily. This includes E-mail manipulations, Data collections, Login events etc.

You can also read & download more here: microsoft.com/en-us/security/b

Xinkai Duxinkaidu
2024-04-03

Excited to share that this July I will be hosting a symposium on network psychometrics at IMPS, Prague, where I will present with @liu_thorsten, Ria Hoekstra, @bsiepe, Tatiana Kvetnaya, and Kai Nehler about our latest work!

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