“…Email: m.rhemtulla@uva.nl A wide range of PM designs have been proposed, including designs for multi-trait multimethod research (Bunting, Adamson, & Mulhall, 2002;Saris et al, 2004;Revilla & Saris, 2013), longitudinal growth curves (Graham, Taylor, & Cumsille, 2001;McArdle & Woodcock, 1997;Mistler & Enders, 2012), cross-sectional survey research (Graham et al, 2006;Raghunathan & Grizzle, 1995;Thomas, Raghunathan, Schenker, Katzoff, & Johnson, 2006), case-control research (Wacholder, Carroll, Pee, & Gail, 1994), and educational assessment (e.g., "matrix sampling," Shoemaker, 1973;Sirotnik & Wellington, 1977). The multi-form PM design (variously referred to as the "partial questionnaire," "split questionnaire," or "split ballot" design) is one of the simplest and most versatile of these, where each participant is randomly assigned to receive only a subset of all variables (Arminger & Sobel, 1990;Graham et al, 2006;Raghunathan & Grizzle, 1995;Wacholder et al, 1994).…”