How do people decide how much to spend on purchases for themselves versus others? If researchers are to be believed, it all depends on how powerful we feel at the moment of choice. "We ask whether the powerful and powerless differentially value the self versus others, and whether this, in turn, translates into observable differences in their spending behavior," write authors Derek D. Rucker, David Dubois, and Adam D. Galinsky (Kellogg School at Northwestern University) in a recent issue of the...