“…The rst of the authoritative counts of the homeless appeared shortly thereafter (Hombs & Snyder, 1982), followed by compilations of expert opinion by government agencies (U.S. Department of Housing and Urban Development, 1984), and by estimates produced by university-based scholars (such as Rossi, 1989), nonpro t research centers (Burt & Cohen, 1989), and by the U.S. Bureau of the Census (Taeuber, 1990). These various estimates differ substantially in methodology and de nition, and their interpretation is subject to political manipulation as well as legitimate statistical controversy (Jencks, 1994;O'Flaherty, 1996;Cordray & Pion, 1997). Nevertheless, these estimates do reveal a simple fact: the incidence of homelessness increased substantially during the 1980s and has yet to decline.…”