What do we call a person who sees the glass as half empty rather than half full?

Card No. 311 in Topps' 1952 baseball set, a holy grail for collectors, features which Yankees slugger? In which 2007 movie musical does Tracy Turnblad learn new dance moves after being sent to detention? Country singer and mystery novelist Richard Friedman was better known by which twisted nickname? Tyne Daly and Angela Lansbury won Tonys for playing Mama Rose, a role Ethel Merman originated without winning, in which… Which itchy outdoor pest is the tiny red larva of a harvest mite? Varney Air Lines, founded by Walter Varney in 1926, was a predecessor of which major U.S. airline? Unlike conscious suppression, which defense mechanism unconsciously banishes unacceptable impulses from awareness? Which metalloid element has the atomic number 5?