I analyze a bilateral bargaining model with one-sided uncertainty about time preferences. The uninformed player has the option of halting the bargaining process to obtain additional information, when it is his turn to offer. For a wide class of preference settings, the uninformed player does not collect information when he is quite sure about his opponent’s type. There exist preference settings in which the uninformed player collects information until he is sufficiently sure about his opponent’s type, as long as the information source is accurate enough. With additional assumptions, the uninformed player is more likely to draw signals and is better off, if the information is more accurate.