Ana Rosa Gonazalez Martinez attended the conference From crisis to growth? The challenge of imbalances, debt, and limited resources, which took place in Berlin at the end of October 2011, and was organized by the Research Network Macroeconomics and Macroeconomic Policies (FMM) and the Macroeconomic Policy Institute (IMK) in the Hans Böckler Foundation. The objective of this conference is promoting the development of post-Keynesian economics, as it was shown in the introductory workshop celebrated before participants´ presentations.

She delivered a paper, Modelling accumulation: An empirical application of the accelerator principle, which proposes a theoretical explanation of capital accumulation which extends the normal investment function, where the rate of capacity utilization and the profit share are considered the main determinants of the analyzed phenomenon. The main reason to extend this model is to account for some important elements, which influence investment decisions. For example, the impact of monetary elements, like the long-term interest rate, the effect of the stock exchange market, and the presence of uncertainty, which is approximated by the exchange rate and oil prices. Moreover, it is also important to account fully for uncertainty. These hypotheses are tested against a sample, which collects data over the period 1970-2010 for 12 OECD economies. The econometric parameters of the dynamic functions, which are empirically estimated, support the testable hypothesis and reinforce the validity of this particular Kaleckian approach.