This paper presents an econometric mediation analysis. It considers identification of production functions and the sources of output effects (treatment effects) from experimental interventions when some inputs are mismeasured and others are entirely omitted.

Because uncertainty is high in bad times, investors find it harder to assess firm prospects and, hence, should value analyst output more. However, higher uncertainty makes analysts' tasks harder so it is unclear if analyst output is more valuable in bad times. We find that, in bad times, analyst...

Although firm financial policies were affected by a credit contraction during the recent financial crisis, the impact of increased uncertainty and decreased growth opportunities was stronger than that of the credit contraction per se. From the start of the financial crisis (third quarter of...