When the Equity Premium Was New: How the Baleful Impact of Deflation Eluded E. L. Smith
重新审视了E. L. 史密斯1924年发现的股权溢价，发现历史数据表明股权溢价依赖于没有通货紧缩的条件，美国和日本的数据还显示通货紧缩放缓也有类似影响。
In 1924, Edgar Lawrence Smith published an empirical study showing that an equity premium had been consistently realized in history. The now-familiar idea that stocks will outperform bonds over the long run was at that time a startling rejection of conventional wisdom. Smith’s contemporaries expected bonds to have outperformed under the deflationary conditions that prevailed in the later 19th century. Using recently compiled data, I revisit the question of whether history shows an unconditioned equity premium. US and UK data show the historical equity premium to be contingent on the absence of deflation. US and Japan data show that disinflation has effects similar to deflation. The paper concludes by developing the implications of accepting a contingent equity premium.