%0 Journal Article
%T Difference in Generality Between Item Pairs Mediates Effect of Difference in ItemsĄŻ Lengths on Inter
%A Tyler Hamby
%J Journal of Psychoeducational Assessment
%@ 1557-5144
%D 2018
%R 10.1177/0734282917709740
%X In this study, the author examined potential mediators of the negative relationship between the absolute difference in itemsĄŻ lengths and their inter-item correlation size. Fifty-two randomly ordered items from five personality scales were administered to 622 university students, and 46 respondents from a survey website rated the itemsĄŻ readability, clarity, and generality. Based on prior research, the author hypothesized that the difference in mean ratings of item pairsĄŻ generality, but not readability or clarity, would mediate the negative relationship between the difference in the item pairsĄŻ lengths and their inter-item correlation size. In pairs of items, difference in item length was negatively correlated with inter-item correlation size. However, only difference in ratings of generality, not readability or clarity, was associated with correlation size, and as predicted, it mediated the relationship between item length and correlation size. Theoretical and practical implications are discussed
%K words per item
%K survey methodology
%K psychometrics
%K item analysis
%K item difficulty
%U https://journals.sagepub.com/doi/full/10.1177/0734282917709740