Cochrane Brett A, Pratt Jay
Department of Psychology, University of Toronto, Sidney Smith Hall, 100 St. George Street, Toronto, ON, M5S 3G3, Canada.
Atten Percept Psychophys. 2022 Jan;84(1):1-9. doi: 10.3758/s13414-021-02403-0. Epub 2021 Nov 24.
The item-specific proportion congruency (ISPC) effect reflects the phenomenon that Stroop congruency effects are larger for Stroop items that are more likely to be congruent (MC) than incongruent (MI). While the ISPC effect is purported to reflect long-term memory associations, the proportion manipulation entails that stimulus repetitions vary as a function of the MC and MI conditions, suggesting that a short-term repetition priming process may also contribute. In the present study, we investigated whether the ISPC effect reflected contributions from separate long-term associative learning and short-term repetition priming processes. To do so, the magnitude of the ISPC effect was compared when stimulus repetitions were present and absent. While the ISPC effect was robust, it was revealed that removing stimulus repetitions significantly attenuated the effect. Overall, the present study indicates the ISPC effect can reflect contributions from both short-term repetition and long-term memory processes.
特定项目比例一致性（ISPC）效应反映了这样一种现象：对于更可能一致（MC）而非不一致（MI）的Stroop项目，Stroop一致性效应更大。虽然ISPC效应据称反映了长期记忆关联，但比例操纵意味着刺激重复会根据MC和MI条件而变化，这表明短期重复启动过程也可能起作用。在本研究中，我们调查了ISPC效应是否反映了单独的长期联想学习和短期重复启动过程的贡献。为此，比较了存在和不存在刺激重复时ISPC效应的大小。虽然ISPC效应很显著，但结果显示去除刺激重复会显著减弱该效应。总体而言，本研究表明ISPC效应可以反映短期重复和长期记忆过程的贡献。
