"For United States annual data that include World War II, the estimated multiplier for temporary defense spending is 0.4–0.5 contemporaneously and 0.6-0.7 over 2 years. If the change in defense spending is "permanent" (gauged by Ramey's defense-news variable), the multipliers are higher by...

"Using international data starting in 1957, we construct a sample of cases where fast-growing economies slow down. The evidence suggests that rapidly growing economies slow down significantly, in the sense that the growth rate downshifts by at least 2 percentage points, when their per capita...