The relationship between processes and time-varying covariates is of central theoretical interest in many social science research questions. On the one hand, event history analysis has been the method chosen to study the relationship between time-varying covariates and outcomes that can meaningfully be specified as simple instantaneous events or transitions.
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Social scientists have generated a large and inconclusive literature on the effect(s) of marriage on men’s wages. Researchers have hypothesized that the wage premium enjoyed by married men may reflect both a tendency for more productive men to marry and an effect of marriage on productivity. To sort out these explanations, researchers have used fixed effects regression models for panel data. This article shows that these models are generally inappropriate for answering the causal questions of interest.
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Throughout history persons with power seem to have been convinced that they could influence the people most effectively with visual art and therefore they invested a lot of resources into the visual presentation of power. It is usually argued that the people with their “simple minds” need visual art to understand a complex world. However, it might be more to the truth that not the people but the rulers themselves are the most addicted persons to the messages transported by visual arts.