Social surveys are often used to estimate unemployment duration distributions. Survey nonresponse may then cause a bias … respondents and non-respondents. We develop a method to empirically distinguish between two explanations for a bias in results … both explanations. We discuss implications for standard methods to deal with non-response bias. …

how to reduce or remove this bias using instrumental variable methods, and provides conditions that instrumental variables … at least 15 percent, and perhaps as much as 42 percent, of measured mobility is upward bias due to measurement error. The …

survey. Even if nonresponse is random, severe bias attaches to wage equation coefficient estimates on attributes not matched …