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ArtikelUsing Generalizability Theory to Estimate The Reliability of Writing Scores Derived From Holistic and Analytical Scoring Methods  
Oleh: White, Kinnard P. ; Brown, Timothy T. ; Montgomery, James W. ; Reed, Martha ; Wakely, Melissa B. ; Swartz, Carl W. ; Levine, Melvin D. ; Hooper, Stephen R. ; Kruif, Renee E. L. de
Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Educational and Psychological Measurement vol. 59 no. 3 (1999), page 492-506.
Topik: TEST SCORES; educational evaluation; tests; testing
Fulltext: 492.pdf (79.42KB)
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  • Perpustakaan Pusat (Semanggi)
    • Nomor Panggil: EE30.3
    • Non-tandon: 1 (dapat dipinjam: 0)
    • Tandon: tidak ada
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Isi artikelIssues surrounding the psychometric properties of writing assessments have received on going attention. However, the reliability estimates of scores derived from various holistic and analytical scoring strategies reported in the literature have relied on classical test theory (CT), which accounts for only a single source of variance within a given analysis. Generalizability theory (GT) is a more powerful and flexible strategy that allows for the simultaneous estimation fo multiple sources of error variance to estimate the reliability of test scores. Using GT, two studies were conducted to investigate the impact of the number of raters and the type of decision (relative vs absolute) on the reliability of writing scores. The results of both studies indicated that the reliability coefficients for writing scores decline as : a. the number of raters is reduced and b. when absolute decision rather than relative decisons are made
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