1.5 points Cumulative abnormal returns (CAR) are used in event studies. are used in event studies and are better measures of security returns due to firm-specific events than are abnormal returns (AR). are better measures of security returns due to firm-specific events than are abnormal returns (AR). are cumulated over the period prior to the firm-specific event. are used in event studies and are cumulated over the period prior to the firm-specific event. Stock prices are measures of firm value. lagging forward-looking coincident backward-looking