Abstract
This study examined the influence on recognition of specific source item by using deformed post-event information effect paradigm. This paradigm is composed of three stages (event stage, post-event information stage, memory test stage). Usually, event is presented by slide of video and post-event information is presented by text. In this paradigm, the form of source is different and quantity of information is often different. This study was controlled these differences. The event was presented by text and quantity was controlled. As a result, source monitoring was difficult for the participants who recognized first source items. On the other hand, it was easy for the participants who recognized second source items. These results suggest that retrieving preceding information makes the following source monitoring difficult.
