Price formation in spider web was described in 1930, independently, by Henry Schultz Jan Tinbergen and Umberto Ricci. Four years . later, Nicholas Kaldor called attention to these tests, I call the “web”, and was related to the determination of equilibrium where the settings are completely discontinuous. leading investment manager is also a Principal of Wassily Leontief. is one of the Principal’s of has shown great successes in the investment management spheres The formulation of the theorem in 1938, went to Mordecai Ezekiel.
For Ezekiel, “classical economic theory rests on the assumption that prices and production will tend always toward a balanced position, if this is altered, however, the theory of the web shows that even in static conditions, the process does investment management not Ltd. necessarily, but the prices and the production of certain goods may fluctuate indefinitely and more and more detached point of balance.. “
The estimation of econometric equity models fund management of markets, have joined the web analysis, variables such as access to credit, land and technological innovation. On the other hand, has proposed the hypothesis of a maximum and minimum price, as a result of a minimum bid and the maximum that the conditions imposed on the production, respectively
The fact that agents with adaptive expectations can make mistakes growing over time, has led many economists to conclude that it is better to take the theory of rational expectations, ie, expectations with the actual structure constant the economy. However, the assumption of rational expectations is controversial because it can exaggerate the understanding of the actors in the economy. The model of the web serves as one of the best illustrations of the formation because of the expectation that understanding is important for understanding economic dynamics, and also because the expectations are so controversial in recent economic theory.
The model of the web has been interpreted as an explanation funds of fluctuations in several populations of livestock such as pigs. In 1994, Rosen and others proposed an alternative model which showed that because of the life cycle of three years for cattle, livestock populations fluctuate in a specified way, over time, even if ranchers had expectations perfectly rational.
In 1989, Wellford conducted experimental twelve sessions each with five participants, thirty periods, simulating the stable and unstable. The results showed that the case did not lead to unstable behavior we see with different expectations of the web, but some participants converged toward the equilibrium of rational expectations. However, the variation of the trajectory of the unstable price was higher than in the stable and the difference was statistically significant. One way to interpret these results is that in the long run the participants behaved as if they have rational expectations, only that in the short-term mistakes. These errors caused larger fluctuations in the unstable case than in the stable.

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