infonet-economy

Many researchers seek factors that predict the cross-section of stock returns. The standard methodology sorts stocks according to their factor scores into quantiles and forms a corresponding long-short portfolio. Such a course of action ignores any information on the covariance matrix of stock returns. Historically, it has been difficult to estimate the covariance matrix for a large…

Striatal abnormalities play a crucial role in the pathophysiology of schizophrenia. Growing evidence suggests an association between aberrant striatal activity during reward anticipation and symptom dimensions in schizophrenia. However, it is not clear whether this holds across the psychosis continuum. The aim of the present study was to investigate alterations of ventral striatal…

Constructing joint confidence bands for structural impulse response functions based on a VAR model is a difficult task because of the non-linear nature of such functions. We propose new joint confidence bands that cover the entire true structural impulse response function up to a chosen maximum horizon with a prespecified probability (1 − α), at least asymptotically. Such bands are…

In response to the unusually high levels of price volatility during the world food price crisis of 2007/2008, US and EU regulators have introduced position limits that aim to protect commodity markets from exposure to excess speculation. Such regulatory initiatives presuppose that excess speculation is indeed responsible for excess volatility. Our results debunk this presupposition…

We study the effect of family income and maternal hours worked on child development. Our instrumental variable analysis suggests different results for cognitive and behavioral development. An additional 1,000 USD in family income improves cognitive development by 4.4 percent of a standard deviation but has no effect on behavioral development. A yearly increase of 100 work hours…

We propose to change the default P-value threshold for statistical significance from 0.05 to 0.005 for claims of new discoveries.

The existing literature assumes that unemployment insurance (UI) affects the labor market through the job finding rate of eligible workers. I argue that this focus is too narrow. I show evidence for UI effects through three other margins: (i) search externalities; (ii) takeup of other welfare state programs; and (iii) job separations. This suggests that the analysis of optimal UI…

We analyze social mobility of decennial citizenry cohorts of Zurich born between 1780 and 1870. We categorize individuals according to their occupations and use different measures to show the level, change, and components of intergenerational mobility. Mobility was imperfect and weakly decreasing over time. Both level and change are driven by intergenerational persistence of…