Caleb Johnson

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No region of the United States fared worse over the postwar period than the " Rust Belt, " the heavy manufacturing zone bordering the Great Lakes. We argue that a lack of competition in labor and output markets in the Rust Belt's main industries were responsible for much of the region's decline. We formalize this theory in a dynamic general-equilibrium(More)
Understanding interests expressed through user's search query is a task of critical importance for many internet applications. To help identify user interests, web engines commonly utilize classification of queries into one or more pre-defined interest categories. However, majority of the queries are noisy short texts, making accurate classification a(More)
No region of the United States fared worse over the postwar period than the " Rust Belt, " the heavy manufacturing region bordering the Great Lakes. This paper hypothesizes that the Rust Belt declined in large part due to a lack of competitive pressure in its labor and output markets. We formalize this thesis in a two-region dynamic general equilibrium(More)
How do average hours worked vary with income per capita? To answer this question, we build a new internationally comparable database of hours worked covering countries of all income levels. We document that average hours worked per adult are substantially higher in low-income countries than in high-income countries. This pattern is shaped by differences(More)
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