Online shopping is becoming one of the most popular applications on the Internet. Websites are the important
interfaces in HCI (Human–Computer Interaction). Website design significantly affects online shopping behavior.
This research used eye-tracker to track the eye-movement process for 42 college students when they were surfing
websites with different levels of complexity and completing simple and complex tasks respectively. The study
examines how website complexity and task complexity jointly affect users' visual attention and behavior due to
different cognitive loads. The study fills a research gap by examining this phenomenon from the cognitive load
perspective and taking themoderate effect of task complexity into consideration. The results showthat task complexity
can moderate the effect of website complexity on users' visual attention and behavior. Specifically, when
users conducted a simple task, fixation count and task completion time were at the highest level on the website
with high complexity, while fixation durationwas not significantly different on the websiteswith different complexity.
However, when users conducted a complex task on awebsite with mediumcomplexity, task completion
time, fixation count, and fixation durationwere all at their highest level. The load theory of attentionwas used to
provide the explanation for the results. The findings provide guidelines for website managers and designers to
maximize users' visual attention.
Online shopping is becoming one of the most popular applications on the Internet. Websites are the importantinterfaces in HCI (Human–Computer Interaction). Website design significantly affects online shopping behavior.This research used eye-tracker to track the eye-movement process for 42 college students when they were surfingwebsites with different levels of complexity and completing simple and complex tasks respectively. The studyexamines how website complexity and task complexity jointly affect users' visual attention and behavior due todifferent cognitive loads. The study fills a research gap by examining this phenomenon from the cognitive loadperspective and taking themoderate effect of task complexity into consideration. The results showthat task complexitycan moderate the effect of website complexity on users' visual attention and behavior. Specifically, whenusers conducted a simple task, fixation count and task completion time were at the highest level on the websitewith high complexity, while fixation durationwas not significantly different on the websiteswith different complexity.However, when users conducted a complex task on awebsite with mediumcomplexity, task completiontime, fixation count, and fixation durationwere all at their highest level. The load theory of attentionwas used toprovide the explanation for the results. The findings provide guidelines for website managers and designers tomaximize users' visual attention.
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