Self-presentation is the way in which we construct and present ourselves to others. Social perception is the way in which we seek to know and understand other persons and events. This chapter describes in detail the way in which we form impressions of other people, and the way we attempt to shape their impressions of us, the way we assign causes to observed behavior and events, and the errors that commonly occur as we do so. The chapter closes with a discussion of the functions that social-perceptual errors may serve.