[Objective] This paper studies the pedestrian’s changing awareness, aiming to use the think-aloud method to analyze the navigational information behaviors. It also provides suggestions to mobile map development from the users’ perspectives. [Methods] We designed three pedestrian navigation experiments in the real outdoor environment, and required the participants use the map APP while thinking loud out. [Results] We found that users paid more attention to the search features than to the external information of the pedestrian navigation system. People paid attention to the display of search results, and their main awareness changed from ambient temperature to location, and finally to destination situation. [Limitations] We classified the data with three time slots manually, which might generate some errors. [Conclusions] Think-Aloud method can be applied to investigate user-APP interactions in the real outdoor environment, which help us optimize the map APP to improve user experience.
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