id author title date pages extension mime words sentence flesch summary cache txt np193774b80 Melissa Ann Mitchell A Comparison of the Diagonal and Cross-Sectional Designs When Assessing Longitudinal Mediation 2009 .txt text/plain 148 7 36 This design is a compromise between the cross-sectional and longitudinal designs since it incorporates time in the model but only has one measurement of X, M, and Y. These two designs were compared to see whether the diagonal design assesses longitudinal mediation more accurately than the cross-sectional design when mediation is full or partial. It was found that the diagonal design does not assess longitudinal mediation more accurately than the cross-sectional design. cache/np193774b80.txt txt/np193774b80.txt