Stata incorporates commands for carrying out two of the three general approaches to asymptotic significance testing in regression models, namely likelihood ratio (lrtest) and Wald tests (testparms). However, the third approach, using "score" tests, has no such general implementation. This...

Using a rich and under-exploited set of primary sources, differential rates of take up of radio broadcast technologies across the British Empire are described and explained. The research adds a developing economy perspective to the literature on the diffusion of consumer durables. The effects of...

Advertising as a proportion of national income rose from the late 1940s and peaked in the mid-to-late 1950s. This growth however exhibited inflection points in 1949 and 1951 which coincided with political economy shifts. During this period of growth all sectors producing consumer goods increased...