The propagation of augmented reality (AR) and virtual reality (VR) applications that leverage smartphone technology has increased along with the ubiquity of smartphone adoption. Although AR and VR technologies have been widely utilized in the educational domain, there remains a dearth of empirical research examining the differences in educational impact across AR and VR technologies. The purpose of our exploratory study was to address this gap in the literature by comparing AR and VR technologies with regard to their impact on learning outcomes, such as retention of science information. Specifically, we use a two-condition (AR vs. VR) between-subjects' design to test college students' science-knowledge retention in response to both auditory and visual information presented on a Samsung S4 smartphone app. Our results ( N = 109) suggest that VR is more immersive and engaging through the mechanism of spatial presence. However, AR seems to be a more effective medium for conveying auditory information through the pathway of spatial presence, possibly because of increased cognitive demands associated with immersive experiences. Thus, an important implication for design is that educational content should be integrated into visual modalities when the experience will be consumed in VR, but into auditory modalities when it will be consumed in AR.

2020 marks the 25th anniversary of the “digital divide.” Although a quarter century has passed, legacy digital inequalities continue, and emergent digital inequalities are proliferating. Many of the initial schisms identified in 1995 are still relevant today. Twenty-five years later, foundational access inequalities continue to separate the digital haves and the digital have-nots within and across countries. In addition, even ubiquitous-access populations are riven with skill inequalities and differentiated usage. Indeed, legacy digital inequalities persist vis-à-vis economic class, gender, sexuality, race and ethnicity, aging, disability, healthcare, education, rural residency, networks, and global geographies. At the same time, emergent forms of inequality now appear alongside legacy inequalities such that notions of digital inequalities must be continually expanded to become more nuanced. We capture the increasingly complex and interrelated nature of digital inequalities by introducing the concept of the “digital inequality stack.” The concept of the digital inequality stack encompasses access to connectivity networks, devices, and software, as well as collective access to network infrastructure. Other layers of the digital inequality stack include differentiated use and consumption, literacies and skills, production and programming, etc. When inequality exists at foundational layers of the digital inequality stack, this often translates into inequalities at higher levels. As we show across these many thematic foci, layers in the digital inequality stack may move in tandem with one another such that all layers of the digital inequality stack reinforce disadvantage.

Prior research suggests that both exergaming and virtual reality (VR)-based training programs could improve executive functions in older adults. However, few studies investigated whether combining exergaming with VR would be more effective. This study seeks to (a) investigate whether playing exergames in an immersive virtual environment (IVE) would yield differential outcomes in selected executive functions, including inhibition, task switching, and working, and (b) examine the role of feeling of presence as a potential mediator between immersive exergaming and cognitive improvement in specific domains. Thirty-three participants over 50 years of age (mean age = 62) participated in a 4-week training program and were randomly assigned into an IVE and non-IVE to play an exergame (Fruit Ninja) for eight sessions within 4 weeks. The results revealed a significant effect of the IVE on the Stroop Test and Trail Making Test after the 4-week training. Furthermore, the impacts of the IVE exergaming on these two tasks were mediated by the feeling of presence. These findings suggested that the immersive experience of exergaming would elicit the feeling of presence, which later contributes to improved cognitive performances in inhibition and task switching. For the theoretical implications, this study extends previous research by showing that (a) feeling of presence could contribute to older adults' cognitive improvement, and (b) the impacts of immersive exergame training on executive functions vary across individual domains. Additionally, this study provides practical implications such that the design of exergames could emphasize the game features requiring mental simulation, which can serve as a novel strategy for preventing cognitive decline in midlife and old age.

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Older adults are the most digitally divided demographic group. The present study explores how older adults perceive the physical use of information and communication technologies (ICTs), particularly across generations and contexts. Data for the present study come from nine focus groups. Seniors acknowledge that ICTs help them connect with geographically distant social ties, but that they lead to feelings of disconnection with geographically close social ties. We label this phenomenon the "physical-digital divide," which exists when a group feels ostracized or offended when those around them engage with ICTs while they themselves are not or cannot engage with ICTs. Younger generations are often referred to as "digital natives" and older generations as "digital immigrants." A more apt label for older adults may be "physical natives," as their preferred method of communication involves physical face-to-face interactions and traditional codes of etiquette. Suggestions are made for reducing the physical-digital divide.

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There is a strong push to increase American students' interest in Science, Technology, Engineering, and Mathematic (STEM) careers. However, minority and female students remain underrepresented in the STEM fields. Therefore, it is essential that we continue to examine the potential factors that both incite and dissuade STEM interest. We apply Expectancy-Value Theory (EVT) to examine STEM attitudes of predominantly low-socioeconomic status minority elementary school students over the course of a computing intervention. Furthermore, we integrate the digital inequality mental access conceptualization of 'emotional costs' into the EVT model in order to predict students' negative STEM attitudes. Data are from a large-scale computing intervention that took place in a primarily minority, high poverty, urban elementary school district located in the southeastern USA. Results indicate that positive expectancies for success and subjective task values predict students' positive STEM attitudes. Emotional costs toward technology primarily predict negative STEM attitudes. Students' expectancies/values and emotional costs may have a 'push-andpull' effect on the formation of STEM attitudes. This study successfully links digital disparities to STEM disparities by integrating the digital inequality concept of emotional costs. Practically, we conclude that future computing interventions should increase students' academic-related expectancies and values while also minimizing their emotional costs in order to address both digital and STEM inequalities. Theoretically, we conclude that broad conceptualizations of emotional costs should be included in future studies to help explain negative attitudes/ motivations toward STEM-related topics.

Marking the 25th anniversary of the “digital divide,” we continue our metaphor of the digital inequality stack by mapping out the rapidly evolving nature of digital inequality using a broad lens. We tackle complex, and often unseen, inequalities spawned by the platform economy, automation, big data, algorithms, cybercrime, cybersafety, gaming, emotional well-being, assistive technologies, civic engagement, and mobility. These inequalities are woven throughout the digital inequality stack in many ways including differentiated access, use, consumption, literacies, skills, and production. While many users are competent prosumers who nimbly work within different layers of the stack, very few individuals are “full stack engineers” able to create or recreate digital devices, networks, and software platforms as pure producers. This new frontier of digital inequalities further differentiates digitally skilled creators from mere users. Therefore, we document emergent forms of inequality that radically diminish individuals’ agency and augment the power of technology creators, big tech, and other already powerful social actors whose dominance is increasing.