By ELAINE KURTENBACH, AP Business WriterBANGKOK (AP) — World shares were mixed Tuesday after U.S. stocks slumped on heavy selling of shares in companies that could be losers in the artificial-intelligence boom. A report by Citrini Research, a New York-based financial services company, that outlined a future scenario in which AI’s dominance caused the “human-centric consumer economy,” to wither away with dire consequences for employment, was the latest hit to confidence for companies that might be displaced by fast expanding use of the technology. “Policy response has always lagged economic reality, but lack of a comprehensive plan is now threatening…