Almost all incarcerated fathers will be released back to their communities. Once free, fathers ideally would be in a position to succeed in a prosocial manner not only as individuals but also as parents. Fathers would find a place to live, find a job, have positive relationships with family members, and make wise decisions at each crossroads they reach. Although some fathers do achieve these milestones, many continue to struggle to overcome the same problems (e.g., poverty, relational difficulties, substance abuse) they were facing at the time of incarceration, which are problems that likely played some role in their path to incarceration in the first place (Mumola, 2000;Travis, 2000). Moreover, virtually all fathers, even those who manage to succeed, deal with new problems that are by-products of being incarcerated, including, but not limited to, new (and opportunity-restricting) labels, new mental health problems, new problems in relating to others, a new repertoire of antisocial behaviors, enlarged deviant peer networks, and disenfranchisement from certain rights (e.g., voting) and benefits (e.g., access to public housing) that are available to other U.S. citizens (Nagin, Cullen, & Jonson, 2009).Given this plethora of challenges, it is not surprising that recidivism during the period of "reentry" is common, and that fathers remain at risk for a return to incarceration for an extended period of time. For example, most men (and fathers) are rearrested after release: 28% within the first 6 months, 58% within the first year, and 77% within the first 5 years (Durose, Cooper, & Snyder, 2014). In an attempt to remedy this situation and prevent the related pain, suffering, and societal expense, a significant number of federal, state, and local efforts have focused on the reentry period for fathers, with a particular focus on psychosocial intervention programs. A variety of "best practice" resources have been created to guide policymakers and practitioners in this work. Until recently, most of the information available has come from quasi-experimental research studies, with an emphasis on single group pre-post designs and on lessons drawn from anecdotal testimonials from individuals or small groups. A central problem with these source materials is that they provide an abundance of information on those who enroll and stay in reentry programs, but sparse information on those who either do not enroll in programs in the first place or who drop out and disappear from view. Improving outcomes during reentry will require serving each of these subpopulations effectively, and this might mean different programs for different people (see Paul, 1967).To better guide best practice decision making in the field, information is needed from a wider variety of sources and research designs (levant, 2005). Research designs that have been given less attention within the context of father reentry, but that have the potential to provide valid and reliable evidence to guide policy and practice, are fully experimental in nature, within which a...