“…Regression models, such as Schneider and Jacoby’s (1996) study of state Medicaid adoptions include variables for environmental factors, political factors, and organizational factors and isolating the effects of individual variables while holding other variables constant. Ordinary least squares models have been supplemented by non recursive causal models (Dean 1980), time series models (Newcomer and Hardy 1980), and substantively weighted least squares (Meier, Gill, and Waller 2000). While regression methods estimate the overall effects of multiple variables, the methodology does little to estimate whether the configuration of variables produces particular outcomes.…”