Samkvæmni í mati á munnlegum undirprófum WPPSI-Ris

Fjórir reyndir sálfræðingar mátu sömu úrlausnir 79 barna á fimm munnlegum undirprófum íslenskrar útgáfu WPPSI-R. Úrlausnir 36 drengja og 43 stúlkna, á fjórum aldursbilum, voru valdar með tilviljunaraðferð úr stöðlunarúrtaki prófsins. Við mat á úrlausnunum notuðu sálfræðingarnir matsreglur í íslenskri stöðlun WPPSI-R. Ekki kom fram marktækur munur í mati matsmanna á munnlegu undirprófunum fimm. Áreiðanleikastuðlar mats (Intraclass correlation coefficients) voru 0,97 fyrir Þekkingu, 0,94 fyrir Skilning, 0,88 fyrir Orðskilning, 0,96 fyrir Líkingar og 0,95 fyrir Setningar. Gott samræmi er því í mati á munnlegum undirprófum í staðlaðri útgáfu WPPSI-R hérlendis.
Four experienced psychologists (three males and one female) scored the same 79 forms on five verbal subtests of the Icelandic standardization version of WPPSI-R. Forms were randomly sampled from the standardization sample. Scoring was based on scoring rules given in the Icelandic handbook. Objectivity of the scoring rules was tested by evaluating interscorer reliability. To assess interscorer reliability a type of Intraclass correlation coefficient was used that takes account of differences in scorer leniency as well as random error. Interscorer reliability coefficients were 0,97 on Information, 0,94 on Comprehension, 0,88 on Vocabulary, 0,96 on Similarities and 0,95 on Sentences. These results indicate that the scoring rules for these subtests are objective enough for different scorers to reach similar results when scoring the same responses.