Ja Young Lee

Ja Young Lee
Google Inc. | Google

PhD

About

14
Publications
3,640
Reads
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107
Citations
Introduction

Publications

Publications (14)
Conference Paper
Human-technology interactions involving errors undermine acceptance and performance. The effect of errors and the ability to recover from them represent a particularly important consideration for design in safety-critical multitasking situations. However, few studies have considered the recovery process of errors in multitasking situations, such as...
Conference Paper
Full-text available
Drivers show a wide range of behavior while performing a secondary task behind the wheel. In the current study, we categorized drivers into groups based on their glance behavior at task boundary (i.e., pressing a touch screen button after reading driving-related messages) and compared driving capabilities of drivers in each group. The comparison be...
Article
Drivers engage in non-driving tasks while driving, such as interactions entertainment systems. Studies have identified glance patterns related to such interactions, and manual radio tuning has been used as a reference task to set an upper bound on the acceptable demand of interactions. Consequently, some view the risk associated with radio tuning a...
Article
A computational model is created to simulate drivers’ task switching behavior, or dynamic allocation of visual attention, while they are driving and engaging in a secondary task. The model takes the following into account: uncertainty about the roadway, task structure, and individual differences. The first factor, uncertainty, means a lack of infor...
Article
This study assessed whether quantile regression can identify design specifications that lead to particularly long glances, which might go unnoticed with traditional analyses focusing on conditional means of off-road glances. Although substantial research indicates that long glances contribute disproportionately to crash risk, few studies have direc...
Conference Paper
The visual-manual distraction guidelines by National Highway Traffic Safety Administration (NHTSA) provide a method to assess potential distraction of secondary tasks. According to the method, one instance of “testable task” is performed once by 24 participants, and three glance measures (i.e., mean duration of off-road glances, total eyes off road...
Conference Paper
Studies of multitasking while driving have shown that drivers tend to switch attention at subtask boundaries. It is also known that the uncertainty of roadway information plays a significant role in attention switching. Yet, these two approaches have not been modeled together. In this study, we create an attention switching model that accounts for...
Article
Full-text available
There is debate about whether emotional granularity, the tendency to label emotions in a nuanced and specific manner, is merely a product of labeling abilities, or a systematic difference in the experience of emotion during emotionally evocative events. According to the Conceptual Act Theory of Emotion (CAT) (Barrett, 2006), emotional granularity i...
Conference Paper
As in-vehicle infotainment systems gain new functionality, their potential to distract drivers increases. Searching for an item on interface is a critical concern because a poorly designed interface that draws drivers’ attention to less important items can extend drivers’ search for items of interest and pull attention away from roadway events. Thi...
Conference Paper
Full-text available
A web-based evaluation tool that simulates drivers’ eye glances to interface designs of in-vehicle information systems (IVISs) is presented. This application computes saliency of each location of a candidate interface and simulates eye fixations based on the saliency, until it arrives at the region of interest. Designers can use this tool to estima...
Article
For the present article a haptically enhanced 3D virtual environment was created, and this study investigates how visually impaired users perceive and explain the virtual space when haptic is the only input modality. The study investigates what factors affect the use of reference frame when the users verbally express a haptically constructed mental...
Conference Paper
Reference frame is key in explaining the relationship between two objects. This paper focused on the orientation parameter of a reference frame in use of projective spatial terms, and its use by visually impaired participants using a haptic device to explore a haptic virtual environment. A total of nine visually impaired participants between 12 and...

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