“…Since the pioneer work of (Warner, 1965 ), many extensions and developments have been proposed by various authors. These concern, first, improvements of the Warner design with respect to the statistical efficiency and/or the respondent’s cooperation by modifying the structure, for example, see (Boruch, 1971 ; Greenberg, Abul-Ela, Simmons, & Horvitz, 1969 ; Kuk, 1990 ; Cruyff, Böckenholt, & van der Heijden, 2016 ; Ulrich, Schröter, Striegel, & Simon, 2012 ; Gupta, Tuck, Gill, & Crowe, 2013 ; Lee, Sedory, & Singh, 2013 ; Su, Sedory, & Singh, 2017 ; Sayed & Mazloum, 2020 ; Sedory, Singh, Olanipekun, & Wark, 2020 ; Reiber, Schnuerch, & Ulrich, 2022 ; Zapata, Sedory, & Singh, 2022 ). Second, they concern the improvement of the analysis of RR data by relating the sensitive question measured with RR, with covariates and taking into account the possibility for noncompliance to the instructions of RR design (Scheers & Dayton, 1988 ; Clark & Desharnais, 1998 ; Böckenholt & van der Heijden, 2007 ; Cruyff, van den Hout, van der Heijden, & Böckenholt, 2007 ; Böckenholt, Barlas, & van der Heijden, 2009 ; Moshagen, Musch, & Erdfelder, 2012 ; Hoffmann & Musch, 2016 ; Reiber, Pope, & Ulrich, 2020 ; Hoffmann, Meisters, & Musch, 2020 ; Wolter & Diekmann, 2021 ; Meisters, Hoffmann, & Musch, 2022b ).…”