Previous research suggests that social influence and social prediction (i.e., how would others behave in a similar situation?) can have a profound impact on individuals’ consumption patterns. Despite the popularity of the social aspect of decision making in consumer research, there are certain topics that received very little attention to date. In my dissertation, I explore three such underresearched topics, namely (1) the effect of the presence of an accompanying friend on consumer spending, (2) the impact of social power on financial risk taking, and (3) the accuracy of social predictions in the context of endowment. Each essay addresses an issue that either stems from the difference in individuals’ focus on the self versus others (Essays...