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We survey the evidence bearing on measurement error in the CPI and provide our best estimate of the magnitude of CPI bias. We also identify a " weighting " bias in the CPI that has not been previously discussed in the literature. In total, we estimate that the CPI overstates the change in the cost of living by about 0.6 percentage point per year, with a(More)
useful conversations. We thank the Searle Foundation and the Kaufman Foundation for funding. All errors are our responsibility. Abstract How much economic value did the diffusion of broadband create? We provide benchmark estimates for 1999 to 2006. We observe $39 billion of total revenue in Internet access in 2006, with broadband accounting for $28 billion(More)
Seven women with histories of puerperal psychosis and four with histories of puerperal major depression were consecutively treated with high-dose oral estrogen immediately following delivery. None of the women had histories of nonpuerperal affective disorder, and all women were affectively well throughout the current pregnancy and at delivery. Despite the(More)
This paper develops a general equilibrium model with putty-clay technology , investment irreversibility, and variable capacity utilization. Low short-run capital-labor substitutability induces the putty-clay effect of a tight link between changes in capacity and movements in employment and output. Permanent shocks to technology or factor prices generate a(More)
BACKGROUND The puerperium has typically been a period of risk for the development of psychiatric illness. Although postpartum depressive illness has been discussed extensively in the literature, obsessive compulsive disorder during pregnancy and puerperium has received little attention. METHOD Fifteen women with new-onset obsessive compulsive symptoms(More)
The U.S. produces two conceptually identical official measures of its economic output, currently called Gross Domestic Product (GDP) and Gross Domestic Income (GDI). These two measures have shown markedly different business cycle fluctuations over the past twenty-five years, with GDI showing a more-pronounced cycle than GDP. The goal of this paper is to(More)
The principal force behind the many changes in household finances during the past several decades has been an expansion of financial opportunities. Such opportunities can yield benefits in terms of household economic security. However, the financial crisis that began in 2007 has powerfully illustrated that expanded financial opportunities can also pose(More)
OBJECTIVE The postpartum period has typically been considered a time of heightened vulnerability for development of affective disorders, and women with bipolar disorder have consistently demonstrated vulnerability to puerperal worsening of mood. This retrospective study examined the extent to which mood-stabilizing agents provide prophylactic benefit to(More)