The masked onset priming effect in picture naming

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Speech Production

Background:

• The masked onset priming effect (MOPE) demonstrates faster reading aloud when a target word is preceded by a briefly flashed prime sharing initial sounds.
• A key characteristic of MOPE is its presumed non-lexical basis, meaning it operates independently of word meaning or lexical access.

Purpose of the Study:

• To investigate the underlying mechanisms of the masked onset priming effect (MOPE).
• To determine whether MOPE is based on non-lexical processes or speech-planning mechanisms.

Main Methods:

• Dutch participants performed a picture-naming task.
• Picture names (bisyllabic) were preceded by visually masked primes.
• Primes varied in their overlap with the target word's onset, last segment, or whole word.

Main Results:

• Picture naming was facilitated by primes sharing the first segment (onset) but not the last segment.
• Priming effects were observed for both first-syllable and last-syllable primes.
• Whole-word primes with initial or final segment overlap significantly slowed naming latencies.

Conclusions:

• The observed first-segment priming effect (MOPE) is inconsistent with a non-lexical response competition account.
• Findings support a speech-planning account for the masked onset priming effect.
• MOPE likely involves early stages of speech production planning.