PSYCH 255B

Item Response Theory

Psychology · 4 units · Graduate courses (200-299)

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Introduction to item response theory (IRT) measurement models and their application to educational and psychological data. Coverage of major IRT models, including models for dichotomous and polytomous formats.

S/U or letter grading.

When it runs

Not on the schedule for any of Fall 2025 through Spring 2027. UCLA publishes only that window, so this does not mean the course is gone — check the official listing.

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Requisites

Official UCLA wording
Requisites: courses 250A, 250B.

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Requires

Everything that has to come before this course, not just the courses named in the requisite above.

PSYCH 255B

PSYCH 250AAdvanced Psychological Statistics
PSYCH 250BAdvanced Psychological Statistics

2 direct requisites. The whole upstream is here — 2 courses over 1 level. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

No course in the catalog lists this as a requisite.