Semantic priming and retrieval from lexical memory: Evidence for facilitatory and inhibitory processes

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Attention Studies

Background:

• Investigating the effects of priming on lexical decision-making.
• Exploring the role of semantic relatedness in word recognition.
• Examining attentional mechanisms in visual processing.

Purpose of the Study:

• To investigate the impact of prime type and duration on reaction times in word and nonword classification tasks.
• To test predictions derived from the Posner and Snyder (1975a) two-factor theory of attention.
• To elucidate the influence of semantic priming on cognitive processing speed.

Main Methods:

• Participants performed speeded word-nonword classification tasks.
• Visual primes (neutral, related, unrelated words) were presented before target letter strings at varying durations (360, 600, 2,000 ms).
• Reaction times (RTs) were measured for word (W) and nonword (N) targets under different priming conditions (NX, R, U, WP).

Main Results:

• For word targets, RTs were slower with unrelated primes (U) than neutral primes (NX) across all durations.
• For word targets, RTs were faster with related primes (R) than neutral primes (NX), with greater facilitation at longer prime durations (600, 2,000 ms).
• For nonword targets, RTs were faster with word primes (WP) than neutral primes (NX) across all durations.

Conclusions:

• Semantic priming effects are modulated by prime relatedness and duration.
• Findings support the two-factor theory of attention, distinguishing between strategic and automatic attentional processes.
• The study demonstrates how priming influences lexical access and classification efficiency.