Are you as important as me? Self-other discrimination within trait-adjective processing.

Area of Science:

• Cognitive Neuroscience
• Social Psychology

Background:

• Healthy adults exhibit enhanced cognitive processing for self-relevant and positive information.
• The interaction between self-relevance and valence biases, and the impact of experimental design on these processes, remain unclear.

Purpose of the Study:

• To investigate the interaction between self-relevance and valence biases in information processing.
• To examine how blocked versus mixed referent designs affect self-reference and valence processing.

Main Methods:

• Two studies employed a Self-Referential Encoding Task with behavioral and electrophysiological measures (event-related potentials: P1 and LPP).
• Trait adjectives were encoded relative to oneself or a fictional character in blocked or mixed trial designs, followed by recall and recognition tasks.

Main Results:

• Participants showed enhanced memory for self-relevant and positive adjectives, regardless of design.
• Larger late positive potential (LPP) amplitudes were observed for self-relevant and positive adjectives.
• The LPP self-relevance effect differed in timing and duration between blocked and mixed designs.
• The LPP valence effect was design-dependent, appearing later in the mixed design.
• Behavioral evidence for an interaction between self-relevance and valence emerged only in the mixed design.

Conclusions:

• Self-relevance and valence independently influence neural socio-cognitive processing.
• Experimental design significantly modulates the temporal dynamics of self-relevance and valence processing.
• A distinct self-positivity bias, where self-positive information receives prioritized processing, was not consistently observed across designs.