In the presence of an endogenous treatment and a valid instrument, causal effects are (nonparametrically) point identified only for the subpopulation of compliers, given that the treatment is monotone in the instrument. Further populations of likely policy interest have been widely ignored in...

As any empirical method used for causal analysis, social experiments are prone to attrition which may flaw the validity of the results. This paper considers the problem of partially missing outcomes in experiments. Firstly, it systematically reveals under which forms of attrition - in terms of...

Consistency of propensity score matching estimators hinges on the propensity score's ability to balance the distributions of covariates in the pools of treated and nontreated units. Conventional balance tests merely check for differences in covariates' means, but cannot account for differences...

We investigate the finite sample properties of a large number of estimators for the average treatment effect on the treated that are suitable when adjustment for observable covariates is required, like inverse pro¬bability weighting, kernel and other variants of matching, as well as different...

First, the institutions of direct democracy, referendum and initiative, are described. One of the main arguments against direct political rights is that citizens are often, or even generally, not enough informed or even incompetent to decide on important political issues. Therefore, the problem...

This paper studies profit-maximizing seller behavior when brand image affects consumer demand. We consider a seller facing a population of consumers with heterogeneous tastes regarding product quality and brand image. First, we analyze “active branding” by the seller through costly...

Taking into account the Swiss experience, this paper considers some aspects of the current reform discussion concerning the German health insurance system. The income dependence of effective premia, their size and their distributional consequences are discussed. The potential role of competition...

This paper discusses alternative transition strategies of moving towards an S-base cash-flow business tax. While the tax has attractive neutrality properties, moving from the current situation towards the new system often involves a stark trade-off between short-run losses and long-run gains. We...

The paper proposes a model where heterogeneous firms choose whether to undertake R&D or not. Depending on R&D choice, innovative firms are more productive, have larger investment opportunities and lower own funds than non-innovating firms. As a result, innovative firms are financially...

This paper presents new evidence on how the annuitization decision is affected by changes in the annuity’s value. We take advantage of an unprecedented change in policy in a number of Swiss occupational pension plans: The 20 percent reduction in the rate at which retirement capital is...