EL SEGUNDO, Calif.--(BUSINESS WIRE)--For the first quarter of 2015, Mattel, Inc. (NASDAQ: MAT) today reported constant currency revenue growth of 5%, adjusted operating loss of $14.6 million, and adjusted loss per share of $0.08. “In the first quarter, we took a number of steps to implement a rapid turnaround at Mattel,” said Christopher Sinclair, Mattel Chairman and CEO. “We are already benefitting from better decision-making, alignment and enhanced accountability. And we’ve begun to refocus o