2013年7月5日金曜日

International Equity Premium Puzzle

Colacito and Croce (2010) "Risks For The Long Run And The Real Exchange Rate"

<quote>
i) risk aversion has to be large to reconcile the low volatility of consumption growth rates with highly volatile stochastic discount factors (see equity premium puzzle)

ii) consumption is poorly correlated across countries at annual or higher frequencies
<unquote>

International Equity Premium Puzzle
Since Δe = m* - m ⇨ V(Δe) = V(m*) + V(m) - 2Cov(m*,m), if Cov(m*,m) is small as is observed in the data (consumption correlation), the volatility of exchange rate in the data is too small (V(m*) and V(m) are large).

Hansen-Jagannathan Bounds

see p.12

http://people.bu.edu/fgourio/lecturenotes741Fall2006.pdf

2確率変数の分散公式

V(aX+bY) = a^2V(X)+b^2V(Y)+2abCov(X,Y)

http://mp-w3math.jwu.ac.jp/~konno/pdf/statga18a.pdf

2013年7月4日木曜日

Feldstein-Horioka Pazzle

The national saving rate is highly correlated with its domestic investment rate, which is not supported by the standard economic theory assuming open international financial economy.


Baxter and Crucini (1993) "Explaining Saving Investment Correlations"

"Saving-investment correlations are higher for larger countries."

COUNTRY SIZE AND SAVING-INVESTMENT CORRELATIONS

Country           GNP(1985 U.S. $)   S-I correlation
United States       3,994                    0.86
Japan                  1,365                     0.80
Germany                667                     0.68
France                   527                     0.31
Italy                       372                     0.39
Canada                 347                      0.61
Australia               171                      0.54
Switzerland           106                      0.65