van den Bos Lisa M E C, Benjamins Jeroen S, Postma Albert
Experimental Psychology, Helmholtz Institute, Utrecht University, the Netherlands.
Experimental Psychology, Helmholtz Institute, Utrecht University, the Netherlands; Social, Health and Organizational Psychology, Utrecht University, the Netherlands.
Acta Psychol (Amst). 2020 Nov;211:103190. doi: 10.1016/j.actpsy.2020.103190. Epub 2020 Oct 30.
Boundary extension (BE) is a phenomenon where participants report from memory that they have experienced more information of a scene than was initially presented. The goal of the current study was to investigate whether BE is fully based on episodic memory or also involves semantic scheme knowledge.
The study incorporated the remember/know paradigm into a BE task. Scenes were first learned incidentally, with participants later indicating whether they remembered or knew that they had seen the scene before. Next, they had to rate 3 views - zoomed in, zoomed out or unchanged - of the original picture on similarity in closeness in order to measure BE.
The results showed a systematic BE pattern, but no difference in the amount of BE for episodic ('remember') and semantic ('know') memory. Additionally, the remember/know paradigm used in this study showed good sensitivity for both the remember and know responses.
The results suggest that BE might not critically depend on the contextual information provided by episodic memory, but rather depends on schematic knowledge shared by episodic and semantic memory. Schematic knowledge might be involved in BE by providing an expectation of what likely lies beyond the boundaries of the scene based on semantic guidance.
2343 learning & memory.
边界扩展（BE）是一种现象，即参与者从记忆中报告他们经历了比最初呈现的更多的场景信息。本研究的目的是调查BE是否完全基于情景记忆，还是也涉及语义图式知识。
该研究将记得/知道范式纳入BE任务中。首先让参与者偶然学习场景，随后让他们指出是否记得或知道自己之前见过该场景。接下来，他们必须对原始图片的三种视图——放大、缩小或不变——在接近程度上的相似性进行评分，以测量BE。
结果显示出一种系统的BE模式，但情景记忆（“记得”）和语义记忆（“知道”）的BE量没有差异。此外，本研究中使用的记得/知道范式对记得和知道反应均显示出良好的敏感性。
结果表明，BE可能并不关键地依赖于情景记忆提供的上下文信息，而是依赖于情景记忆和语义记忆共享的图式知识。图式知识可能通过基于语义引导提供对场景边界之外可能存在的事物的预期而参与到BE中。
2343学习与记忆。
