Sovereign debt restructurings have been shown to influence the dynamics of imports and exports. This paper shows that the impact can vary substantially depending on whether the restructuring takes place preemptively without missing payments to creditors, or whether it takes place after a default...

Various research areas face the methodological problems presented by nonnegative integer count data drawn from heterogeneous populations. We present a disaggregate negative binomial regression procedure for analysis of count data observed for a heterogeneous sample of cross-sections, possibly...

In order to control for censoring and the integer nature of trip demand, the use of count data models in travel cost analysis is attractive. Two such models, the Poisson and negative binomial, are discussed. Robust estimation techniques that loosen potentially stringent distributional...

1. Einführung: Kausale Aussagen und Prognosemodelle -- 2. Abhängige Variablen mit begrenztem Wertebereich -- 3. Zeitreihenanalyse und dynamische Modelle -- 4. Paneldatenanalyse -- 5. Instrumentvariablen -- 6. Strukturgleichungsmodelle -- 7. Fehlende Werte (Missing values) -- 8. Ergänzungen.