Yale University professor Robert Shiller, founded CAPE, the cyclically adjusted and inflation adjusted S&P price earnings ratio. It takes the average of the 10 past years of earnings and the inflation adjusted S&P 500 index to arrive at this CAPE P/E ratio. Here he looks at CAPE in 2000, 2007 and 2013, to get a sense of where the U.S. stock market stands today and investor confidence. In 2000 CAPE reached 46, in 2007 it was at 27 and in 2013 it has reached 23. The historical average for CAPE is 15- this goes back in data to 1871. Zweig in the WSJ March 8, 2013, cites data from the last 50 years showing the historical adjusted P/E at 19.7. The investor confidence in the stock market or "valuation confidence" based on work done by Shiller is at 72% for institutional investors and 62% for individual investors in 2013, it was about 80% for both categories before the market peak in 2007. This data is on the website of the Yale School of Management. Shiller says the levels of optimism can fluctuate and change easily, requiring careful thinking by investors. He confirms Browning's assertion in the WSJ March 6, 2013, that in inflation adjusted terms investors are not ahead in the last 13 years, when compared to 2000, based on the inflation corrected S&P Composite total return index....