PSY-FPX7610 covers the psychometric theory underlying every psychological test — reliability, validity, and test construction — the technical foundation that determines whether an assessment tool is actually trustworthy.
Reliability and validity in depth
PSY-FPX7610 covers the multiple forms of reliability (test-retest, internal consistency, inter-rater) and validity (content, construct, criterion) at graduate technical depth, teaching students to evaluate a specific assessment tool's psychometric properties critically rather than assuming any published test is automatically well-validated.
Test construction and standardization
The course covers the process of constructing a new psychological measure — item development, pilot testing, factor analysis, and establishing normative data — giving students genuine technical grounding in how trustworthy assessment tools are actually built and validated.
Key topics in PSY-FPX7610
- Reliability types: test-retest, internal consistency, inter-rater
- Validity types: content, construct, criterion-related
- Test construction: item development and pilot testing
- Factor analysis in test development
- Establishing normative data and standardization
- Critically evaluating published assessment tools' psychometric properties
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Worked example: evaluating a popular assessment's psychometric properties
- Widely-used tool: A popular personality typing instrument used in many corporate training contexts
- Psychometric evaluation: Independent research has found relatively low test-retest reliability — a meaningful proportion of test-takers receive a different type classification when retested weeks later
- Implication: A tool with poor test-retest reliability cannot be measuring a genuinely stable trait consistently, undermining confidence in its practical application
- Lesson: Widespread popularity and commercial success are not evidence of genuine psychometric quality — only rigorous reliability and validity testing can establish that
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Frequently asked questions
Commercial success and widespread adoption depend on factors like marketing, ease of use, intuitive appeal, and organizational buy-in — none of which are the same as rigorous, independently verified reliability and validity evidence. PSY-FPX7610 teaches students to evaluate psychometric quality directly rather than assuming popularity implies quality, because several widely used assessment tools (in both clinical and organizational contexts) have been shown by independent psychometric research to have weaker reliability or validity than their popularity might suggest — a graduate-level psychology professional needs the technical skill to independently evaluate a tool's actual test-retest reliability, internal consistency, and validity evidence, rather than assuming a tool's commercial ubiquity is itself proof of genuine measurement quality.
Reliability refers to the consistency of a measurement — whether it produces stable, repeatable results across time (test-retest), across different items intended to measure the same construct (internal consistency), or across different raters (inter-rater). Validity refers to whether a test actually measures what it claims to measure — whether high scores genuinely reflect high levels of the intended construct, established through evidence like correlation with other established measures of the same construct (criterion validity) or theoretical coherence with the construct's expected pattern of relationships (construct validity). PSY-FPX7610 teaches that a test can be reliable without being valid — consistently measuring something, just not the thing it claims to measure — but a test cannot be valid without also being reliable, since an inconsistent measurement can't accurately reflect a true, stable underlying construct; genuine psychometric quality requires establishing both properties, not just one.