本研究以國立臺灣大學學生為研究對象，以PsycLIT光碟資料庫為檢索系統，計有52位檢索者進行了58次檢索，歸納出四種詞彙選擇之心智模型。本研究之目的在研究個人詞彙選用之心智模型與檢索結果、檢索背景和檢索問題之間的關係。本文除分析個人詞選用之心智模型和檢索結果之關係，並分析檢索背景（包括系別、年級、電腦使用經驗、資訊檢索經驗、檢索目的、對主題熟悉程度、已掌握之資料篇數以及所需資料篇數）對個人心智模型之影響，最後探討不同範疇、複雜性、專指性和前提假定個數等檢索問題特性與個人心智模型之關係。

　　　　　This article attempts to investigate possible factors affecting mental models in CD-ROM searching. The subjects were college and graduate students of National Taiwan University. They used PsyLIT CD-ROM database to search their own questions. After instructions, 52subjects did 58 searchers. According to search terms selections four types of mental models were identified. This article discussed possible factors that influences the above four types of mental models, including subject characteristics, search results and questions.