Source memory that encoding was self-referential: the influence of stimulus characteristics.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Memory Research

Background:

• The self-reference effect (SRE) is a well-documented phenomenon where information processed in relation to the self is better remembered.
• Prior research primarily focused on item memory (remembering the information itself), with less attention to source memory (remembering the context or processing type).

Purpose of the Study:

• To investigate whether self-referential processing similarly enhances source memory as it does item memory.
• To examine how stimulus type (words vs. pictures) and valence (positive, negative, neutral) influence the self-reference effect on both item and source memory.

Main Methods:

• Participants engaged in self-referential or non-self-referential encoding of words and pictures varying in valence.
• Item recognition and source memory accuracy were assessed for each condition.
• Self-relevance ratings were collected during encoding.

Main Results:

• Self-referential processing enhanced item recognition across all stimulus types, confirming a robust item SRE.
• Source memory was enhanced only for positive words processed self-referentially.
• Source memory for negative and neutral pictures was impaired following self-referential processing compared to non-self-referential processing.

Conclusions:

• Item and source self-reference effects are distinct and not universally applicable across different stimulus types and valences.
• The enhancement of source memory by self-referential processing depends on stimulus characteristics, such as valence and format, and their integration into the self-schema.