working paper, focused on the underlying theory, appeared as an invited feature article in the February 2020 Society for Chaos … Theory in Psychology and the Life Sciences newsletter (Hastings et al. 2020). …

(COVID – 19). Model of a single-product economy is presented where the supply shock has a constant acceleration. If amount of … the supply shock has a modest positive acceleration the product earnings are positive and increasing with the passage of … time. We observe an economic growth. If amount of the supply shock has a large positive acceleration the product earnings …

The U.S. prewar output series exhibit smaller shock-persistence than postwar-series. Some studies suggest that this may … nonstationary process. We find that interpolation indeed reduces shock-persistence, but the interpolated series can still exhibit … greater shock-persistence than a pure random walk. Moreover, linear interpolation makes the series periodically nonstationary …

The U.S. prewar output series exhibit smaller shock-persistence than postwar-series. Some studies suggest this may be … nonstationary process. We find that interpolation indeed reduces shock-persistence, but the interpolated series can still exhibit … greater shock-persistence than a pure random walk. Moreover, linear interpolation makes the series periodically nonstationary …