Elementary students completed daily diaries indicating peer encounters and participated in sociometric surveys. Findings indicated negative peer experiences related to their reputations as assessed by sociometric nominations. Children who were poorly liked or viewed as exhibiting undesirable characteristics encountered more peer mistreatment than children well liked or exhibiting desirable characteristics. Children's reports of positive encounters were not associated with reputations. Aggressive-rejected boys reported less negative treatment than withdrawn-rejected boys. (Author/KB)