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Dr. Sarah Sapiens 11 March 2026
What Makes a Professional Reference Useful?
How to turn professional references from polite formalities into structured, predictive data that actually improves hiring decisions.
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Evidence-based research and analysis from people science.
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Johnathen Evans-Guilbault 11 March 2026 Structured vs. Unstructured Reference Check
A structured reference check uses standardized questions and rating scales for every candidate, producing reliable data. Unstructured methods let references say whatever comes to mind.
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Johnathen Evans-Guilbault 11 March 2026 Adverse Impact (Hiring)
Adverse impact occurs when a hiring practice results in significantly different selection rates for different demographic groups, regardless of intent.
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Johnathen Evans-Guilbault 11 March 2026 Reference Inflation
Reference inflation is the tendency for references to be overwhelmingly positive, so positive they fail to distinguish between candidates. Structure counteracts it.
Read more - ((○)) Johnathen Evans-Guilbault 11 March 2026
Observer-Rated Personality
Observer-rated personality is when someone who knows you rates your traits rather than you rating yourself. Research shows these ratings predict job performance twice as well as self-reports.
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Johnathen Evans-Guilbault 11 March 2026 Inter-Rater Reliability
Inter-rater reliability is the degree to which independent raters give consistent assessments of the same person. It sets the ceiling for how valid any assessment can be.
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Johnathen Evans-Guilbault 11 March 2026 Criterion-Related Validity
Criterion-related validity is the degree to which scores on a selection tool actually predict a meaningful outcome such as job performance, measured by correlation.
Read more - ((○))Dr. Sarah Sapiens 11 March 2026
Why Traditional Reference Checks Fail
Traditional reference checks are ubiquitous yet distrusted. We examine the five structural failures and the evidence-based alternatives.
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