Is unconscious identity priming lexical or sublexical?

Area of Science:

• Cognitive Psychology
• Neuroscience
• Psycholinguistics

Background:

• Unconscious priming is a phenomenon where exposure to a stimulus influences response to a subsequent stimulus without conscious awareness.
• Previous research suggests both identity and form-based primes can elicit unconscious priming effects.

Purpose of the Study:

• To investigate the mechanisms underlying unconscious priming in a masked stem-completion task.
• To differentiate between identity-based and form-based priming effects.
• To determine if unconscious priming relies on lexical or sublexical representations.

Main Methods:

• Participants completed a stem-completion task with exclusion instructions.
• Briefly flashed masked words (primes) were presented before target stems.
• Identity, form-based, homophone, and orthographic control primes were used across two experiments.
• Prime identification success was recorded and analyzed.

Main Results:

• Unconscious priming occurred for both identity and form-based primes.
• Priming effects were stronger for identity primes, especially when primes were not consciously identified.
• Regression analyses indicated that orthographic and phonological overlap fully explained identity priming.
• Homophone and orthographic control primes showed minimal priming effects.

Conclusions:

• Unconscious identity priming is driven by shared sublexical (orthographic and phonological) features between primes and targets.
• Masked words appear to activate their component features rather than their full lexical representations during unconscious priming.
• The findings challenge theories suggesting unconscious priming directly accesses word meanings.