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The Standardized Letter of Recommendation: Implications for Selection SLR

Author(s):
Liu, Ou Lydia; Minsky, Jennifer; Ling, Guangming; Kyllonen, Patrick C.
Publication Year:
2007
Report Number:
RR-07-38
Source:
ETS Research Report
Document Type:
Report
Page Count:
29
Subject/Key Words:
Rasch Model, Standardized Letter of Recommendation (SLR), Reliability, Item Fit Statistics

Abstract

A multidimensional Rasch investigation suggests that the seven scales of the SLR displayed satisfactory psychometric properties in terms of reliability, model fit, item fit statistics, and discrimination. The two cognitive scales, knowledge and analytical skills, were found to be the best predictors for intern selection. The professor ratings and mentor ratings had moderate to high correlations, with the professor ratings being systematically higher than the mentor ratings. Possible reasons for the rating discrepancies are discussed. Also, implications for how the SLR can be used and improved in other selection situations are suggested.

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