Copyright (c) 2009 All rights reserved. http://works.bepress.com/sergiodasilva Recent documents in Sergio Da Silva en-us Thu, 12 Nov 2009 23:24:38 PST 3600 http://works.bepress.com/sergiodasilva/88 http://works.bepress.com/sergiodasilva/88 Wed, 11 Nov 2009 04:52:35 PST I evaluate the just launched official criterion for assessing the economics research output in Brazil, called "Qualis". I compare it with the simple journal impact factors released by RePEc. Four biases are identified: (1) left left-wing journals have been favored, (2) mainstream British journals have been downgraded, (3) cross disciplinary research output has been neglected, and (4) domestic journals have been favored. Sergio Da Silva Economic Methodology http://works.bepress.com/sergiodasilva/87 http://works.bepress.com/sergiodasilva/87 Wed, 05 Aug 2009 17:57:54 PDT We checked for the presence of rational bubbles in the São Paulo Stock Exchange index using both linear and nonlinear cointegration. We detected the presence of explosive and periodically collapsing bubbles, but we could not track intrinsic bubbles. Mauricio Nunes Macroeconomics http://works.bepress.com/sergiodasilva/86 http://works.bepress.com/sergiodasilva/86 Tue, 16 Jun 2009 09:52:30 PDT A methodology based on the algorithmic complexity theory has been applied to assess the relative efficiency of the stocks listed on Bovespa. We provide eight alternative listings of the top ten stocks according to their efficiency rates. Ricardo Giglio Econophysics http://works.bepress.com/sergiodasilva/85 http://works.bepress.com/sergiodasilva/85 Sun, 14 Jun 2009 17:11:10 PDT A recent neurobiology study showed that monkeys systematically prefer risky targets in a visual gambling task. We set a similar experiment with preschool children to assess their attitudes toward risk and found the children, like the monkeys, to be risk seeking. This suggests that adult humans are not born risk averse, but become risk averse. Our experiment also suggests that this behavioral change may be due to learning from negative experiences in their risky choices. We also showed that though emotional states and predetermined prenatal testosterone can influence children's preferences toward risk, these factors could not override learning experiences. (Forthcoming: Journal of Economic Psychology) Sergio Da Silva Experimental Economics http://works.bepress.com/sergiodasilva/84 http://works.bepress.com/sergiodasilva/84 Thu, 28 May 2009 07:39:56 PDT Sergio Da Silva Experimental Economics http://works.bepress.com/sergiodasilva/83 http://works.bepress.com/sergiodasilva/83 Tue, 24 Mar 2009 14:24:24 PDT One positive aspect of the financial crisis was the boost to the dollar. However, global imbalances have put further pressure on the future of American finance. Sergio Da Silva International Finance http://works.bepress.com/sergiodasilva/82 http://works.bepress.com/sergiodasilva/82 Sat, 21 Feb 2009 17:18:39 PST Sergio Da Silva Microeconomics http://works.bepress.com/sergiodasilva/81 http://works.bepress.com/sergiodasilva/81 Sun, 08 Feb 2009 15:50:56 PST Sergio Da Silva Neuroeconomics http://works.bepress.com/sergiodasilva/80 http://works.bepress.com/sergiodasilva/80 Sun, 08 Feb 2009 15:47:14 PST Sergio Da Silva Game Theory http://works.bepress.com/sergiodasilva/79 http://works.bepress.com/sergiodasilva/79 Sun, 08 Feb 2009 15:45:18 PST Sergio Da Silva Finance