Self-reference and cognitive effort: source memory for affectively neutral information is impaired following negative compared to positive self-referential processing

Previous research suggests a close relationship between self-reference and emotional valence. The present study investigated potential differences in cognitive resources required for positive vs. negative self-referential processing by examining how self/other-referential processing of positive/negative information affects memory for subsequently presented items. On each encoding trial, participants first judged whether a positive or negative trait adjective described themselves or another person. Then, they were shown a neutral noun and indicated its screen location. Subsequent memory tests showed better memory for self-referenced than other-referenced trait adjectives, and the size of this self-reference effect was not modulated by emotional valence. Although memory for nouns was not affected by preceding positive/negative self/other-referential processing, memory for their associated contextual features was significantly impaired following negative vs. positive self-referential processing. Our findings suggest that negative self-referential processing requires more cognitive resources than positive self-referential processing, thereby leaving relatively less cognitive resources to encode subsequently presented information.