There are lots of studies that show this actually http://www.uvm.edu/~pdodds/files/papers/others/everything/ericsson2007a.pdf http://www.uvm.edu/~pdodds/files/

There are lots of studies that show this actually http://www.uvm.edu/~pdodds/files/papers/others/everything/ericsson2007a.pdf http://www.uvm.edu/~pdodds/files/papers/others/everything/er...