Guest article written for AllAboutAlpha.com – the official publication of the  Chartered Alternative Investment Analyst (CAIA) Association originally posted at: http://allaboutalpha.com/blog/2011/10/20/alpha-hunter-using-twitter-to-predict-the-markets/ Our understanding of financial markets in the last few decades has shifted.  Professor Johan Bollen (Indiana University School of Informatics and Computing) states, “..I think behavioural economics has now…