Acting your avatar’s age: effects of virtual reality avatar embodiment on real life walking speed

ABSTRACT

When immersive virtual reality users employ digital self-representations, i.e., avatars, they may be subject to the Proteus effect. This effect describes changes in attitudes and behaviors in accordance with identity cues derived from the employed avatar’s appearance, which can persist after leaving virtual reality. Individual reactions to the experience can affect the strength of observed Proteus effects. Especially the experienced illusions of body ownership of avatars and of being in the virtual environment (spatial presence) have been discussed in this context. This study investigated a Proteus effect of avatar age on post-embodiment walking speed, with special focus on how body ownership and spatial presence moderated this effect. Participants who had previously embodied older avatars took significantly longer to walk a set distance than either young avatar or control group participants. This was only apparent during the first half of the walking phase, which may indicate fast decay rates of the effect after embodiment ended. The reported body ownership could not be shown to impact the strength of the Proteus effect. Participants reporting more pronounced spatial presence were subject to stronger Proteus effects, with only the two-thirds of the sample with higher spatial presence showing evidence of the effect.     

Personifying the Radical

This study examines relationships among individual dispositions, news framing of civil liberties restrictions, security concerns, and political tolerance. We theorize that news frames condition the effects of individual dispositions on security and tolerance attitudes. To explore these relationships, an online‐survey experiment was conducted with 650 respondents. This experiment presented alternative versions of news stories about domestic security policies following September 11, and the policies' implications for a fringe activist group. One factor was whether the activists targeted by the government advocated for a cause supported or opposed by the respondent; another factor was whether the story framed government actions against the activists at the individual or group level. Findings show that individual framing—as opposed to group framing—made participants less tolerant of radicals they opposed and more tolerant of radicals they supported. Similar effects were observed for political ideology. Implications of personification as a framing device are discussed.     

Apocalyptic Specularity in Dante's Eschatology: Narcissus and the Imagination of Salvation

Dante's Commedia provides a performative eschatology or “apocalyptic specularity” that shows well how to keep concerns for apophasis, imagination, and salvation in balance. His literary appreciation for mirroring enables him to re‐present and imitate revelation. Displaying a metaphysically robust imagination, Dante's eschatology is akin to the biblical genre of apocalypse. Dantean analogy—personal and historical while theological and apocalyptical—resists tendencies to account for theology in reducibly negativist terms. The Divine Comedy hopes for the salvation of Narcissus, whose figure reflects the “everyman,” who would furthermore reflect even the triune God.     

Age-related changes in amplitude,latency and specialization of ERP responses to faces and watches

ABSTRACT

Healthy aging is associated with impairments in face recognition. While earlier research suggests that these impairments arise during memory retrieval, more recent findings suggest that earlier mechanisms, at the perceptual stage, may also be at play. However, results are often inconsistent and very few studies have included a non-face control stimulus to facilitate interpretation of results with respect to the implication of specialized face mechanisms vs. general cognitive factors. To address these issues, P100, N170 and P200 event-related potentials (ERPs) were measured during processing of faces and watches. For faces, age-related differences were found for P100, N170 and P200 ERPs. For watches, age-related differences were found for N170 and P200 ERPs. Older adults showed less selective and less lateralized N170 responses to faces, suggesting that ERPs can detect age-related de-differentiation of specialized face networks. We conclude that age-related impairments in face recognition arise in part from difficulties in the earliest perceptual stages of visual information processing. A working model is presented based on coarse-to-fine analysis of visually similar exemplars.