Human-Computer Interaction: An Empirical Research Perspective is the definitive guide to
empirical research in HCI. The book begins with foundational topics including an historical …

Changes in cognition, affect, and brain function combine to promote a shift in the nature of
mentation in older adulthood, favoring exploitation of prior knowledge over exploratory …

With the advent of a digital economy, an emphasis on digital products and services has
emerged. Those who are not using current technologies will become excluded, however …

This study addresses the impact of domain expertise (ie of prior knowledge of the domain)
on the performance and query strategies used by users while searching for information …

In Human-Computer Interaction (HCI) research, awareness for the relevance of diversity of
users is increasing. In this work, we analyze whether the articulated need for more diversity …

This study focuses on the impact of age, prior domain knowledge and cognitive abilities on
performance, query production and navigation strategies during information searching …

The present study addressed age-related differences in performance and strategies while
searching for information on the Web while considering specific processes involved in the …

We investigated the effects of domain-general processing capacity (fluid ability such as
working memory), domain-general knowledge (crystallized ability such as vocabulary), and …

Although access to Internet health information can be beneficial, solving complex health-
related problems online is challenging for many individuals. In this study, we investigated …

Background The Web has become an important information source for appraising
symptoms. We need to understand the role it currently plays in help seeking and symptom …