Several available models of causation which embody "interactions" among some but not all independent variables are compared. Equations of the form

Because censored sampling is often unavoidable in much sociological data analysis, computationally simple corrections of censoring bias would be useful. Heckman's correction is simple to compute, widely used, and proven asymptotically correct under certain assumptions, but its limitations in...

This paper examines a woman's decisions about when to return to market work in the two years following childbirth and the type of child care she chooses. Own wages relate positively to an early return to work, while higher family income delays return to work. Wages and income did not...

This study examined the relationship between loneliness, health, and mortality using a U.S. nationally representative sample of 2101 adults aged 50 years and over from the 2002 to 2008 waves of the Health and Retirement Study. We estimated the effect of loneliness at one point on mortality over...