“…This facilitating of voluntary compliance is then followed by persuasion through enhancing the benefits of registration, and only as a last resort for the small minority still refusing to be compliant does it use punitive measures based on increasing the costs of nonregistration (Braithwaite, 2009;Job, Stout, & Smith, 2007). A second approach is the "slippery slope framework" (Kirchler, Hoelzl, & Wahl, 2008), which pursues both voluntary and enforced compliance concurrently by developing both greater trust in authorities (e.g., by reducing formal institutional imperfections and institutional incongruence) and the greater power of authorities by improving the benefits of registration and costs of nonregistration (Kogler, Muelbacher, & Kirchler, 2015;Muehlbacher, Kirchler, & Schwarzenberger, 2011;Wahl, Kastlunger, & Kirchler, 2010). Until now however, there has been no comparative evaluation of which sequencing and/or combination of measures is the most appropriate and/or effective means of fostering registration in different contexts.…”