We describe a social visualization system that monitors the vocal arousal levels of the participants in a simulated twoparty employment negotiation. In a 3x2 factorial experiment (N = 84), we manipulate two variables of interest for social visualization systems: the feedback configuration of the system’s display (participants receive self feedback vs. partner feedback vs. no feedback) and the status of the interactants (high vs. low). Receiving feedback about one's own arousal level has negative consequences for performance in and feelings about the negotiation. Receiving feedback about one's partner's arousal level interacts with status: high-status individuals benefit from the visualization, while low-status individuals do not. Author Keywords CSCW, social visualization, negotiation, arousal, feedback systems. ACM Classification Keywords H.5.3 Group and Organization Interfaces: Computersupported cooperative work General Terms Human Factors; Experimentation; Theory; ...