National Productive Structure and Innovative Dynamics: Finding the (Endogenous) Path to Convergence

We extend the model presented in Barro and Sala-i-Martin (1997) by allowing for two types of economies - more developed and in transition to European Union integration - to both imitate and innovate varieties of intermediate goods. Besides depending on research and development expenditures, we also allow for the stochastic nature of innovation by making it also dependent on a random component. We do this by Monte Carlo simulation, using a Box-Muller process, and solve a three differential equation model by using numerical methods. Two situations are presented: a leading economy with greater institutions and more labour than the transition economy versus a situation where an institutional advance is given to the transition economy.