Upper- and lower-limb amputees show reduced levels of eeriness for images of prosthetic hands

The "uncanny phenomenon" describes the feeling of unease associated with seeing an image that is close to appearing human. Prosthetic hands in particular are well known to induce this effect. Little is known, however, about this phenomenon from the viewpoint of prosthesis users. We studied perceptions of eeriness and human-likeness for images of different types of mechanical, cosmetic, and anatomic hands in upper-limb prosthesis users (n=9), lower-limb prosthesis users (n=10), prosthetists (n=16), control participants with no prosthetic training (n=20), and control participants who were trained to use a myoelectric prosthetic hand simulator (n=23). Both the upper- and lower-limb prosthesis user groups showed a reduced uncanny phenomenon (i.e., significantly lower levels of eeriness) for cosmetic prosthetic hands compared to the other groups, with no concomitant reduction in how these stimuli were rated in terms of human-likeness. However, a similar effect was found neither for prosthetists with prolonged visual experience of prosthetic hands nor for the group with short-term training with the simulator. These findings in the prosthesis users therefore seem likely to be related to limb absence or prolonged experience with prostheses.

Swiping right: face perception in the age of Tinder

With an estimated 50 million or more users worldwide, Tinder has become one of the most popular mobile dating applications. Although judgments of physical attractiveness are assumed to drive the "swiping" decisions that lead to matches, we propose that there is an additional evaluative dimension driving behind these decisions: judgments of moral character. With the aim of adding empirical support for this proposition, we critically review the most striking findings about first impressions extracted from faces, moral character in person perception, creepiness, and the uncanny valley, as they apply to Tinder behavior. Drawing on this research and the evolutionary theory of biological markets, we formulate several hypotheses that offer directions for future studies of Tinder and other dating apps. We conclude that research on face perception of novel targets supports the plausibility of moral character as a potential factor affecting the swiping decisions and subsequent behavior of Tinder users.

Brave new world: service robots in the frontline

Purpose

The service sector is at an inflection point with regard to productivity gains and service industrialization similar to the industrial revolution in manufacturing that started in the eighteenth century. Robotics in combination with rapidly improving technologies like artificial intelligence (AI), mobile, cloud, big data and biometrics will bring opportunities for a wide range of innovations that have the potential to dramatically change service industries. The purpose of this paper is to explore the potential role service robots will play in the future and to advance a research agenda for service researchers.

Design/methodology/approach

This paper uses a conceptual approach that is rooted in the service, robotics and AI literature.

Findings

The contribution of this paper is threefold. First, it provides a definition of service robots, describes their key attributes, contrasts their features and capabilities with those of frontline employees, and provides an understanding for which types of service tasks robots will dominate and where humans will dominate. Second, this paper examines consumer perceptions, beliefs and behaviors as related to service robots, and advances the service robot acceptance model. Third, it provides an overview of the ethical questions surrounding robot-delivered services at the individual, market and societal level.

Practical implications

This paper helps service organizations and their management, service robot innovators, programmers and developers, and policymakers better understand the implications of a ubiquitous deployment of service robots.

Originality/value

This is the first conceptual paper that systematically examines key dimensions of robot-delivered frontline service and explores how these will differ in the future.

Hybrids of the Romantic: Frankenstein, Olimpia, and Artificial Life

Hybride der Romantik: Frankenstein, Olimpia und das künstliche Leben. Dieser Beitrag untersucht Vorstellungen über die Möglichkeit der Erzeugung künstlicher Lebewesen in der Zeit der Romantik und die damit verbundenen Ängste am Beispiel zweier fiktionaler Texte: Mary Shelleys Frankenstein und Ernst Theodor Amadeus Hoffmanns Sandmann. Dr. Franksteins Monster und Dr. Spalanzanis Automat verkörpern - auf unterschiedliche Weise - die Möglichkeit einer Wendung wissenschaftlicher Produkte und insbesondere künstlicher Hybride ins Monströse. Ihre Geschichten thematisieren das Grauen, das vom drohenden Kontrollverlust ausgeht und als der modernen Wissenschaft innewohnende Gefahr selbst nach der Zerstörung der monströsen Kreaturen bestehen bleibt. Der Begriff des Unheimlichen, von Ernst Jentsch und Sigmund Freud mit Bezug auf Hoffmanns Sandmann formuliert und 1970 von dem japanischen Robotiker Masahiro Mori als Phänomen "des unheimlichen Tals" (Uncanny Valley) weiterentwickelt, erlaubt weitere Einblicke in die Frage nach künstlichen Lebewesen und ihre Interaktion mit Menschen. Summary: Hybrids of the Romantic: Frankenstein, Olimpia, and Artificial Life. This essay analyzes fantasies and fears related to the possible creation of artificial humans in two influential pieces of Romantic literature, namely E.T.A. Hoffmann's Der Sandmann and Mary Shelley's Frankenstein. Both the automaton Olimpia and Dr. Frankenstein's monster are hybrid creatures. These dystopian figures represent the Romantic fear of the loss of control over the outcome of human endeavour, they symbolize the dangers immanent in modern science and technology. As hybrids, Olimpia and Frankenstein's monster are capable of breaking apparently unpenetrable boundaries, such as those between human and non-human, and between life and death. As such, these creatures become "unheimlich" (uncanny), a critical term developed by Ernst Jentsch and Sigmund Freud, who directly referred to Hoffmann's Sandman. The term "uncanny" was further developed by the Japanese roboticist Masahiro Mori in the 1970s. Mori's investigation of human responses to androids ("Uncanny Valley"), shows the persistence of doubts and fears surrounding artificial humans far beyond the Romantic times, and opens new questions related to the issues of creation, reproduction, hybrids, hubris and gender.

Investigating the uncanny valley for prosthetic hands

BACKGROUND

In 1970, Mori hypothesised the existence of an 'uncanny valley', whereby stimuli falling short of being fully human are found to be creepy or eerie.

OBJECTIVES

To investigate how eerie people find different prosthetic hands and whether perceptions of eeriness can be accounted for by categorical ambiguity.

STUDY DESIGN

Students participated in computerised experiments during which photographic images of hands were presented.

METHODS

We compared photographs of prosthetic hands pre-selected as more (H+) or less human-like (H-), as well as mechanical and real hands. Participants rated the hands for eeriness and human-likeness, as well as performing a speeded classification (human/non-human) and location judgment (control) task.

RESULTS

The H- prosthetic hands were rated as more eerie than the H+ prosthetic, mechanical and real hands, and this was unaffected by hand orientation. Participants were significantly slower to categorise the H+ prosthetic hands compared to the H- prosthetic and real hands, which was not due to generally slower responses to the H+ prosthetic hands (control task).

CONCLUSION

People find prosthetic hands to be eerie, most consistently for less human-like prosthetic hands. This effect is not driven by ambiguity about whether to categorise the prosthetic hand as human or artificial. Clinical relevance More obviously artificial, less-realistic, prosthetic hands consistently generate a sense of eeriness, while more realistic prosthetic hands avoid the uncanny valley, at least on initial viewing. Thus, greater realism in prosthetic design may not always incur a cost, although the role of movement and cutaneous input requires further investigation.

Human Perception of Animacy in Light of the Uncanny Valley Phenomenon

The uncanny valley hypothesis by Japanese roboticist Masahiro Mori posits a nonlinear relation between human replicas’ human likeness and the emotional responses they elicit. In three studies, we corroborated the uncanny valley hypothesis, using the uncanny phenomenon as a vehicle to shed a new light on human animacy perception. In Study 1, 62 participants rated emotional responses and human likeness of 89 artificial and human faces. In Study 2, another 62 participants conducted a visual looming task with the same 89 faces allowing for the measurement of perceived threat. Results support the uncanny valley hypothesis, suggesting that the uncanny feeling may serve a function to wary humans of the potential danger of entities crossing the animate–inanimate boundary. In Study 3, 36 participants sorted faces as either real or unreal as quickly as possible in a reaction time sorting task allowing for the measurement of categorical uncertainty associated with animacy perception. Faces associated with longer sorting reaction times were also those associated with the highest ratings of negative emotions, suggesting that categorical uncertainty in animacy detection is related to the uncanny feeling. Results are discussed in light of human animacy perception and new directions for future research are suggested.

The Body That Speaks: Recombining Bodies and Speech Sources in Unscripted Face-to-Face Communication

This article examines advances in research methods that enable experimental substitution of the speaking body in unscripted face-to-face communication. A taxonomy of six hybrid social agents is presented by combining three types of bodies (mechanical, virtual, and human) with either an artificial or human speech source. Our contribution is to introduce and explore the significance of two particular hybrids: (1) the cyranoid method that enables humans to converse face-to-face through the medium of another person's body, and (2) the echoborg method that enables artificial intelligence to converse face-to-face through the medium of a human body. These two methods are distinct in being able to parse the unique influence of the human body when combined with various speech sources. We also introduce a new framework for conceptualizing the body's role in communication, distinguishing three levels: self's perspective on the body, other's perspective on the body, and self's perspective of other's perspective on the body. Within each level the cyranoid and echoborg methodologies make important research questions tractable. By conceptualizing and synthesizing these methods, we outline a novel paradigm of research on the role of the body in unscripted face-to-face communication.