Propensity score matching provides an estimate of the effect of a 'treatment' variable on an outcome variable that is largely free of bias arising from an association between treatment status and observable variables. However, matching methods are not robust against 'hidden bias' arising from...

In den letzten Jahren hat sich eine unified theory aus der Arbeitsökonomik heraus-gebildet, in der die Meinung vorherrscht, dass die Kombination makroökonomi- scher Schocks und flexibler Arbeitsmarktinstitutionen in den USA eine starke Zu-nahme der Lohnungleichheit verursacht habe, während...

Using newly collected data from the General Social Survey, we compare levels of segregation by race and along other potential dimensions of social cleavage for ties defined in terms of trust and acquaintanceship. We further estimate the size of the trust network and compare its size and...