Versace Rémy, Nevers Brigitte
Université Lyon 2, Institut de Psychologie, Laboratoire d'Etude des Mécanismes Cognitifs, 5, avenue Pierre Mendés-France, 69676 BRON Cedex, France.
Br J Psychol. 2003 Aug;94(Pt 3):389-408. doi: 10.1348/000712603767876299.
Two experiments studied the necessary conditions for the occurrence of repetition priming and word frequency effect on priming in a lexical decision task. To examine the role of prime processing duration, the prime was presented either for 50 ms or for 700 ms, and an interfering task was introduced between the prime and the target in order to restrict the time during which the prime was effectively processed and to limit it to exactly 50 ms or 700 ms. The interstimulus interval (ISI) between the prime and the target was 1500 ms or 3000 ms in Expt 1, and 600 ms in Expt 2. With primes presented for 50 ms, repetition priming effects were not dependent on target frequency, decreased with an increase of the ISI, and were no longer significant with an ISI of 3000 ms. With primes presented for 700 ms, repetition priming was systematically larger for low-frequency words than for high-frequency words, and remained reliable even with an ISI of 3000 ms. Thus, a minimum of prime duration was required both for maintaining repetition priming effects over more than some hundreds of milliseconds and for the occurrence of frequency effect on repetition priming. Theoretical interpretations of these results are discussed.
两项实验研究了在词汇判断任务中重复启动及启动中的词频效应出现的必要条件。为了检验启动刺激加工时长的作用，启动刺激呈现50毫秒或700毫秒，并且在启动刺激和目标刺激之间引入干扰任务，以限制启动刺激得到有效加工的时间，并将其精确限制在50毫秒或700毫秒。在实验1中，启动刺激和目标刺激之间的刺激间隔（ISI）为1500毫秒或3000毫秒，在实验2中为600毫秒。当启动刺激呈现50毫秒时，重复启动效应不依赖于目标词的频率，随刺激间隔的增加而降低，当刺激间隔为3000毫秒时不再显著。当启动刺激呈现700毫秒时，低频词的重复启动效应系统性地大于高频词，即使刺激间隔为3000毫秒时仍保持显著。因此，要在数百毫秒以上维持重复启动效应以及出现重复启动的频率效应，都需要最少的启动刺激时长。文中讨论了这些结果的理论解释。
