Disclaimer. Don't rely on these old notes in lieu of reading the literature, but they can jog your memory. As a grad student long ago, my peers and I collaborated to write and exchange summaries of political science research. I posted them to a wiki-style website. "Wikisum" is now dead but archived here. I cannot vouch for these notes' accuracy, nor can I even say who wrote them. If you have more recent summaries to add to this collection, send them my way I guess. Sorry for the ads; they cover the costs of keeping this online.
Berry and Berry. 1990. State lottery adoptions as policy innovations: An event history analysis. American Political Science Review 84:395-416.
Studies of innovation/diffusion typically argue either that (1) internal characteristics determine when states adopt new policies or (2) regional diffusion does. The authors argue that these two views are wholly compatible. They also argue that political scientists should use Event History Analysis (EHA) more frequently when trying to explain rare outcomes. The authors test their theories with EHA by looking at adoption of state lotteries.
MOHR'S THEORY OF ORGANIZATIONAL INNOVATION
Mohr argued that innovation occurs when there is (1) motivation to innovate, assuming there are (2) resources available to help you overcome (3) obstacles to innovation. As applied the the present topic, the authors argue that internal characteristics and regional diffusion theories map nicely onto these three concepts (as can be seen by skimming through the 11 hypotheses on pgs 401-404). In short (remember that Y is adoption of a state lottery):
EVENT HISTORY ANALYSIS
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