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ALERT: This system is being upgraded on Tuesday December 12. It will not be available for use for several hours that day while the upgrade is in progress. Deposits to DukeSpace will be disabled on Monday December 11, so no new items are to be added to the repository while the upgrade is in progress. Everything should be back to normal by the end of day, December 12.

Now showing items 1-10 of 36

Spaced responding and choice: A preliminary analysis

Staddon, JER (Journal of the Experimental Analysis of Behavior, 1968)

The effect of informative feedback on temporal tracking in the pigeon

Staddon, JER (Journal of the Experimental Analysis of Behavior, 1969)

The Determinants of Industrial Research and Development: A Study of the Chemical, Drug, and Petroleum Industries

Grabowski, Henry G (1968)

Economists have recently grown interested in doing research on research or R & D, as it is called in industrial circles. Several studies have tested Schumpeter's hoary hypothesis that large firms are responsible for most ...