尋路系統的優劣是影響參觀者對公共展覽空間滿意度與再次參訪的重要因素之一，其中，導覽圖工具扮演重要的資訊輔助角色，過去研究指出個體的空間能力高低與尋路績效具有正向的關係，然而，對導覽圖形式與尋路績效的關係則較少探究。本研究之目的即探討不同導覽圖形式（平面及立體導覽圖）結合個體高低空間能力對尋路績效的影響，以國立自然科學博物館為主要研究場所，採用二因子組間設計進行實地實驗法，共24位受試者分派於實驗之中。於實驗前測量受試者之空間能力高低、實驗中測量使用者的尋路時間及實驗後填寫相關問卷及訪談做為研究分析依據。結果發現，導覽圖形式與個體空間能力並無顯著的交互作用產生，在導覽圖主要效果，只有任務一發現使用立體導覽圖的尋路時間顯著的較使用平面導覽圖的尋路時間低，然而，在後續的其它任務則無顯著的差異性。顯示使用立體導覽圖確實有助於尋路績效的提升，但相對的，隨著使用次數與熟悉度增加，在後續任務中，導覽圖形式則不具影響力。經事後回溯分析的進一步結果發現，使用立體導覽圖的受測者顯著的較使用平面導覽圖有助於空間記憶。同時，主觀問卷的結果呈現，多數受試者均顯著的認同立體導覽圖功能。最後，本研究依據理論、實驗及訪談結果歸納設計導覽圖的五個重要構面，分別為製圖視角、色彩配置、符號圖示、文字資訊及地標物件提出設計參考原則，提供立體導覽圖設計之依據及未來尋路研究參考。

Way finding system is an important factor that affects the satisfaction and revisiting willingness of visitors in the public exhibition space. Museum map serves as an important role of informative supplement in the process of way finding. Previous studies indicate that the positive relationships between the levels of spatial ability and way finding; however, the relationships between the map types and way finding are less to explore. This study aims to investigate the effect of map types (2D and 3D maps) and spatial ability (high and low levels) on way finding in a case of National Museum of Natural Science. The field experiment is carried out by two factors with between subjects design. There were 24 subjects assigned into this experiment. This study measures spatial ability in the beginning of the experiment, measures the time spending of way finding during the experiment, asks for filling the questionnaires and interviews the subjects after the experiment. The results find that there is no significant interaction between the map types and individual spatial ability. The main effect of the map types is that using three-dimensional map significantly spends lesser time than using two-dimensional map in the task one; however, there are no significant differences in the subsequent tasks. This finding reveals that using three-dimensional map enable the way finding to be effectively improved. Nevertheless, the map types are not effective in the subsequent tasks when using frequency and familiarity increased. The protocol analyses show that using three-dimensional map can enhance recollection of the space than using two-dimensional map. The results of subjective questionnaire also show that the subjects are significant to recognize the benefit of three-dimensional map. This study proposes map design principles based on the five dimensions, namely, mapping perspective, color schemes, symbols and icons, text information, and landmark objects for the reference of map design and way finding study.