“…Nevertheless, there is not much evidence in this sample for relationship quality impacts that would appear sufficiently powerful to explain the divorce reduction effect, raising the possibility that other mechanisms produced the impact on divorce, such as non-specific or unmeasured effects (see Hawkins, Stanley, Blanchard, & Albright, 2012). Such issues pertain to the general question of mechanisms of impact, which, as others have noted, are important to elucidate (e.g., Wadsworth & Markman, 2011) but difficult to demonstrate (e.g., Schilling, Baucom, Burnett, Allen, & Ragland, 2003; Stanley, Rhoades, Olmos-Gallo, & Markman, 2007). …”