Conference Paper

Creating Humanlike Chatbots: What Chatbot Developers Could Learn From Webcare Employees In Adopting A Conversational Human Voice

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Abstract

Currently, conversations with chatbots are perceived as unnatural and impersonal. One way to enhance the feeling of humanlike responses is by implementing an engaging communication style (i.e., Conversational Human Voice (CHV); Kelleher, 2009) which positively affects people’s percep-tions of the organization. This communication style contributes to the effectiveness of online communication between organizations and customers (i.e., webcare), and is of high relevance to chatbot design and development. This project aimed to investigate how insights on the use of CHV in organizations’ messages and the perceptions of CHV can be implemented in customer service automation. A corpus study was conducted to investigate which linguistic elements are used in organizations’ messages. Subsequently, an experiment was conducted to assess to what extent linguistic ele-ments contribute to the perception of CHV. Based on these two studies, we investigated whether the amount of CHV can be identified automatically. These findings could be used to design humanlike chatbots that use a natural and personal communication style like their human conversation partner.

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... Most CAs in this classification are text-based, as speech-based CAs can lead to unwanted service failures due to the current state of the technology. In this context, common application areas include Customer service (e.g., purchase or booking/renting support) (Liebrecht & Hooijdonk, 2020), customer care (e.g., complaints) (Hu et al., 2018), financial or product advising (e.g., robo-advisor) (Morana et al., 2020), brand communication (e.g., advertisement) (Tsai et al., 2021), and workplace partner (e.g., CA-human collaboration) (Kuttal et al., 2021). ...
... This leads to a potential rapport and stronger emotional engagement compared to low human-like CAs (Araujo, 2018). In addition, CAs should respond individually to user input and pursue efforts of creating the best possible solution for the customer request (e.g., customer service for problem-solving) (Liebrecht & Hooijdonk, 2020). Results of the studies suggest: CAs should be designed in a way that users can take an active role in the interaction as in a human-to-human interaction (Araujo, 2018), they should respond individually to the user's input to give the customer the feeling that they are being taken care of (Liebrecht & Hooijdonk, 2020), they should be implemented with a gender (Guo et al., 2020), they should be designed to be more human-like to increase the acceptance of recommendations (Diederich, Lichtenberg, et al., 2020), and they should express emotions that lead to more sympathy, empathy, and relationship-building with users (Tsai et al., 2021) ...
... In addition, CAs should respond individually to user input and pursue efforts of creating the best possible solution for the customer request (e.g., customer service for problem-solving) (Liebrecht & Hooijdonk, 2020). Results of the studies suggest: CAs should be designed in a way that users can take an active role in the interaction as in a human-to-human interaction (Araujo, 2018), they should respond individually to the user's input to give the customer the feeling that they are being taken care of (Liebrecht & Hooijdonk, 2020), they should be implemented with a gender (Guo et al., 2020), they should be designed to be more human-like to increase the acceptance of recommendations (Diederich, Lichtenberg, et al., 2020), and they should express emotions that lead to more sympathy, empathy, and relationship-building with users (Tsai et al., 2021) ...
Conference Paper
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The increasing application of Conversational Agents (CAs) changes the way customers and businesses interact during a service encounter. For instance, chatbots are the first point of contact for many customers. In this context, prior research has shown that CAs implemented with a human-like design lead to improved service satisfaction, perceived service quality, and trustworthiness, among others. Developers have become accustomed to adopting a one-size-fits-all approach by designing CAs human-like. However, not every human-to-human service requires the same social and human-like interaction (e.g., contract cancelation vs. doctors' appointment), which has also been shown in current research. At present, existing research lacks a synthesis of the relationship between CA design and service encounter context. Against this background, we conducted a literature review and derive classifications based on the dimensions of service context (professional/private) and human-like design (low/high), which enables the identification of relevant research gaps and related literature.
... To apply chatbots in business contexts, chatbot research has mostly focused on customer-focused topics such as customer support or service (e.g., Corea et al., 2020;Gnewuch et al., 2017;Johannsen et al., 2018;Liebrecht & van Hooijdonk, 2020;Zierau et al., 2020b). Also, researchers have examined information acquisition or provision with chatbots (e.g., Al-Zubaide & Issa, 2011;Carayannopoulos, 2018;Chai et al., 2001;Radlinski & Craswell, 2017;Ranoliya et al., 2017). ...
... Significantly, research in one domain focuses on humanizing chatbots and their response behavior (e.g., Diederich et al., 2020). One such study examined human response behavior as a requirement for more humanlike chatbots by deriving possible linguistic elements and investigating their contributions (Liebrecht & van Hooijdonk, 2020). The authors found anthropomorphic design features to have a high impact on perceived usefulness. ...
... Also, the interface should provide visual input and output elements such as images, control elements, or buttons to increase efficiency or reduce the risk of input errors and, thus, maintain data consistency (Feine et al., 2020). Furthermore, chatbots should include anthropomorphic elements and social cues (R4) such as an avatar, gender, typing delays, interjections, rhetorical elements, or emoticons (Diederich et al., 2020;Feine et al., 2019;Gnewuch et al., 2018;Liebrecht & van Hooijdonk, 2020). Likewise, chatbots should act in a friendly, neutral, and empathetic manner to foster an enjoyable conversation in a professional setting that evokes real human contact (Diederich et al., 2020;Elshan & Ebel, 2020;Tavanapour et al., 2019). ...
... Der CA nutzt menschenähnliche Elemente, um zu fördern, dass Lernende sich sozial gegenüber diesem verhalten und den CA als glaubwürdig wahrnehmen [Fe19,NSS94]. So besitzt dieser einen menschlichen Namen (Vicky) und kommuniziert menschenähnlich, um als virtueller Companion wahrgenommen zu werden [LV20,Si12,St21]. Um eine persönliche Bindung aufzubauen sowie Interesse an der Persönlichkeit der Nutzer:innen zu bekunden, fragt Vicky bewusst nach den Interessen und Vorlieben im Lernprozess [LV20]. ...
... So besitzt dieser einen menschlichen Namen (Vicky) und kommuniziert menschenähnlich, um als virtueller Companion wahrgenommen zu werden [LV20,Si12,St21]. Um eine persönliche Bindung aufzubauen sowie Interesse an der Persönlichkeit der Nutzer:innen zu bekunden, fragt Vicky bewusst nach den Interessen und Vorlieben im Lernprozess [LV20]. Zur Gewährleistung der Transparenz und des Vertrauens erklärt Vicky während des Dialogs, dass sie dazu dient, den Lernstil der Person zu ermitteln und dass hierfür das Erheben persönlicher Daten nötig ist [SKR22]. ...
... B. durch Ausdrücke wie "I'm interested in your personality". Zudem greift Vicky zuvor geäußerte Antworten auf und geht auf diese ein, um als aktiver Zuhörer empfunden zu werden [LV20,St21]. Als weitere Option zur Lernstil-Erkennung verwendet Vicky ein Quiz. ...
Conference Paper
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Personalisiertes Lernen ermöglicht es Lernenden, nach ihren eigenen Lernpräferenzen und-stilen zu lernen. Conversational Agents (CAs) bieten eine vielversprechende Möglichkeit zur Unterstützung der Lernenden. CAs können Lernstile im Dialog mit den Nutzer:innen erkennen sowie passende Lern-Empfehlungen bereitstellen. Eine Herausforderung besteht jedoch darin, dass Lernende diese neuartige Technologie positiv wahrnehmen und ihr vertrauen. In diesem Beitrag wird die Entwicklung des CAs Vicky vorgestellt, welcher Lernstile anhand eines Fragebogens sowie eines Quiz ermittelt. Vicky verhält sich dabei menschenähnlich, um als virtueller Companion wahrgenommen zu werden. In einem Experiment wird untersucht, ob und inwiefern die Lernenden Vicky vertrauen und die Interaktion als freundschaftlich empfinden, sowie ob eine Variante der Lernstil-Erkennung bevorzugt wird. Insgesamt leistet der Artikel einen Beitrag zu Wissenschaft und Praxis, indem gezeigt wird, wie CAs zur Klassifikation von Lernstilen gestaltet werden sollten, damit diese ihr Potenzial entfalten.
... Despite increases in the overall efficacy of bot-based service, consumers remain hesitant to completely commit to chat-based service. These chat-based interactions are often perceived as being too standardized and artificial (Liebrecht and van Hooijdonk, 2019) and consumers may feel that chat agents are a "shell" of a person rather than a real individual (De Ruyter et al., 2018). This hesitation may be particularly salient in online customer chats where consumers want customized service solutions and remedies that they do not feel artificial service agents can deliver (Price, 2018). ...
... This hesitation may be particularly salient in online customer chats where consumers want customized service solutions and remedies that they do not feel artificial service agents can deliver (Price, 2018). Early research in this area suggests that simply changing the conversational tone of a chat agent to be more "human like" can increase engagement, effectiveness, and perceptions of personalization (Liebrecht and van Hooijdonk, 2019). Thus, in the evolution of online chat management, firms have started to deliver functional excellence through the use of AI-powered algorithms and increased engagement based on linguistic style, however, one important aspect of the chat experience has been relatively unexplored: the agent's avatar. ...
... One study found that 38% of users on a chat were not sure if they were communicating with a human or AI, and an additional 18% were incorrect in identifying their conversation partner as real or bot (Wuenderlich and Paluch, 2017). Much research about chatbot communication (e.g., Liebrecht and van Hooijdonk, 2019;Van Pinxteren et al., 2020) suggests the application of interpersonal communication theories and patterns to increase authenticity and increase the user's engagement with chat services. ...
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Marketing practitioners and consumers can benefit from more efficient communication by using online chats for customer service. However, consumers desire a genuine experience and if the online chat experience is not believed to be authentic, it can detract from the benefits offered by using these new technologies. In four studies, including one electroencephalogram (EEG) measurement study, the authors show that firms can increase perceived authenticity of chat agents by sending signals via the avatars used in the chat system. The results indicate that avatar authenticity can be enhanced when the avatar is female, and these effects are amplified when the avatar is dressed professionally or a different race than the consumer. This increased authenticity is shown to drive engagement, loyalty, and satisfaction. The results offer fresh insight on how the use of avatars could help firms improve customer perceptions of service for either human- or bot-supported chat experiences.
... Besides application area-centered research, researchers try to survey the chatbot ecosystem on a more general business level. Thereby, research directions tackle, e.g., trust aspects, humanizing the chatbot, and challenges [2,[9][10][11][12]. This generalized research can typically be reused and adapted for deviating scenarios or use cases. ...
... To reach these potentials of chatbots at workplaces, a lot of design research has been done so far. Besides the major focus on customer-focused areas, e.g., [7,10,21,22], for example, Elshan and Ebel [23] survey chatbots as teammates, and Winkler et al. [6] apply them for problem-solving in businesses. Besides this, chatbots were also used as a means for feedback exchange [24]. ...
... In addition, our workshop participants pointed out, that in this step also the desired level of humanity and anthropomorphism must be clarified 21 . Hereto, enterprises can already rely on a large research stream, e.g., [9,10,28,29,40]. This also encompasses the definition of chatbots' persona 22 [16], e.g., conversation style, appearance, or name. ...
... With the popularity of chatbots in customer services [122], education [57], healthcare [81], and recently in information elicitation to replace surveys [59,121], more emphasis is being put on achieving conversations with chatbots that can simulate natural human conversation [71]. As prior works suggest, impersonal conversations is one of the main challenges towards engaging with chatbots [79]. ...
... Using multimodal conversation that includes verbal and non-verbal cues could potentially enhance perceived human-like behaviors and social presence of the chatbot [71]. CommunityBots could be integrated with features and functionalities to process multimodal conversations to better understand user intentions and simulate natural conversations among humans [31] through identification of non-verbal cues [62], which constitute 93% of communication conveyed by humans [77]. ...
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In recent years, the popularity of AI-enabled conversational agents or chatbots has risen as an alternative to traditional online surveys to elicit information from people. However, there is a gap in using single-agent chatbots to converse and gather multi-faceted information across a wide variety of topics. Prior works suggest that single-agent chatbots struggle to understand user intentions and interpret human language during a multi-faceted conversation. In this work, we investigated how multi-agent chatbot systems can be utilized to conduct a multi-faceted conversation across multiple domains. To that end, we conducted a Wizard of Oz study to investigate the design of a multi-agent chatbot for gathering public input across multiple high-level domains and their associated topics. Next, we designed, developed, and evaluated CommunityBots - a multi-agent chatbot platform where each chatbot handles a different domain individually. To manage conversation across multiple topics and chatbots, we proposed a novel Conversation and Topic Management (CTM) mechanism that handles topic-switching and chatbot-switching based on user responses and intentions. We conducted a between-subject study comparing CommunityBots to a single-agent chatbot baseline with 96 crowd workers. The results from our evaluation demonstrate that CommunityBots participants were significantly more engaged, provided higher quality responses, and experienced fewer conversation interruptions while conversing with multiple different chatbots in the same session. We also found that the visual cues integrated with the interface helped the participants better understand the functionalities of the CTM mechanism, which enabled them to perceive changes in textual conversation, leading to better user satisfaction. Based on the empirical insights from our study, we discuss future research avenues for multi-agent chatbot design and its application for rich information elicitation.
... With regard to the perception experiment, the internal consistency of the scale used to measure perceived CHV was insufficient. This was somewhat surprising, as the scale was also used in the study of Liebrecht and Hooijdonk (2020) and turned out to be reliable. Although the outcomes of our research on the perception of CHV elements were comparable with the findings of Liebrecht and Hooijdonk (2020), it is advisable to adopt validated scales in future research, such as Kelleher's instrument with 11 items, to examine the perception of CHV (Kelleher, 2009;Kelleher & Miller, 2006), or a subset of these items as performed in other CHV studies (e.g., Dijkmans et al., 2015;Schamari & Schaefers, 2015;Sparks et al., 2016). ...
... This was somewhat surprising, as the scale was also used in the study of Liebrecht and Hooijdonk (2020) and turned out to be reliable. Although the outcomes of our research on the perception of CHV elements were comparable with the findings of Liebrecht and Hooijdonk (2020), it is advisable to adopt validated scales in future research, such as Kelleher's instrument with 11 items, to examine the perception of CHV (Kelleher, 2009;Kelleher & Miller, 2006), or a subset of these items as performed in other CHV studies (e.g., Dijkmans et al., 2015;Schamari & Schaefers, 2015;Sparks et al., 2016). ...
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The conversational human voice (CHV) is an extensively studied and adopted communication style in online brand communication. However, in previous research the way in which CHV is operationalized differs considerably: the type and the number of linguistic elements used to establish a sense of CHV in online brand messages varies. Moreover, it is still unknown how CHV operationalizations contribute to consumers’ perceptions of CHV, which consequently could affect their evaluation regarding the message and the brand. In this paper, we addressed these issues by conducting an integrative literature review and a perception experiment, and consequently present a taxonomy of linguistic elements related to message personalization, informal speech, and invitational rhetoric that can be used to operationalize CHV systematically in future studies in online brand communication. Directions for future research and managerial implications are discussed.
... Nowadays, even though artificial agents are already present in people's life (e.g., companion robots in facilities for older people (Bradwell et al., 2020) and conversational chatbots (Liebrecht & Hooijdonk, 2019)), there still are unresolved issues regarding the extent, the shape of the relationship, and causes of UV phenomenon. Furthermore, among research that aims to resolve these issues, the operationalization of variables and utilization of methodologies varies between studies (Diel et al., 2021), making it difficult to determine whether differences in research results are due to differences in methodologies or other factors. ...
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The current study had two main goals—evaluation of the impact of robot stimuli presentation type (virtual reality vs. on-screen simulation) and investigation of the relation between essentialism beliefs and the uncanny valley effect. The experiment involved a virtual café in which participants confronted four characters ranging from robotic to humanlike. The results showed that robotic characters were rated more eerie than humanlike characters. The robotic character with moderate humanlikeness received the highest eeriness rating, which was interpreted by us as evidence of the uncanny valley effect. Contrary to previous research’s suggestion, participants assessed the humanlikeness and eeriness of characters in the same manner in VR and on-screen. Our results show the importance of essentialism beliefs in attitudes toward the most eerie artificial agents. Strong beliefs in the uniqueness of human nature deepen the uncanny valley effect. Additionally, groups with and without previous knowledge of the uncanny valley effect did not differ in their assessments of variables related to this phenomenon.
... These are already applied by marketers to provide consumers with individually tailored experiences; this is done by targeting individual needs and communicating in a flowing dialogue, potentially increasing consumer engagement (see [33]). Designed with cognitive architectures to communicate in a human-like way [42,58], these conversational agents are often described and perceived as anthropomorphic and are evaluated in a human-like way [2,11]. While conversational recommender agents are embraced in the industry [33], it is still unclear how users perceive these, how their anthropomorphic cues influence these perceptions and the corresponding recommendations. ...
Conference Paper
Conversational recommender agents are artificially intelligent recommender systems that provide users with individually-tailored recommendations by targeting individual needs and communicating in a flowing dialogue. These are widely available online, communicating with users while demonstrating human-like (anthropomorphic) social cues. Nevertheless, little is known about the effect of their anthropomorphic cues on users’ resistance to the system and recommendations. Accordingly, this study examined the extent to which conversational recommender agents’ anthropomorphic cues and the type of recommendations provided (user-initiated and system-initiated) influenced users’ perceptions of control, trustworthiness, and the risk of using the platform. The study assessed how these perceptions, in turn, influence users’ adherence to the recommendations. An online experiment was conducted among users with conversational recommender agents and web recommender platforms that provided user-initiated or system-initiated restaurant recommendations. The results entail that user-initiated recommendations, compared to system-initiated, are less likely to affect users’ resistance to the system and are more likely to affect their adherence to the recommendations provided. Furthermore, the study’s findings suggest that these effects are amplified for conversational recommender agents, demonstrating anthropomorphic cues, in contrast to traditional systems as web recommender platforms.
... Additionally, the dialog design should encompass multimedia elements to enrich the dialog (Bittner and Shoury 2019). Furthermore, general aspects of humanized chatbots should also be taken into account to foster user acceptance, e.g., typing delays, gender, or phrasing (Gnewuch et al. 2018;Liebrecht and van Hooijdonk 2020). The chatbot should be a web-based application to provide the functionalities device-and location-independently at any time, and to address the fundamental chatbot characteristics (Meyer von Wolff et al. 2020). ...
... Also, consideration should be given to including support for small talk, since this can further enhance the adoption of chatbots in educational settings, or further in the support department (Hobert and Berens 2020). This was also already found by (Liebrecht and van Hooijdonk 2020), who try to enhance the natural and personal feeling of a chatbot. Nevertheless, our results and evaluations already show a basic acceptance of chatbots in IT-support tasks. ...
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By performing tasks traditionally fulfilled by service personnel and having a humanlike appearance, virtual customer service agents bring classical service elements to the web, which may positively influence customer satisfaction through eliciting social responses and feelings of personalization. This paper sheds light on these dynamics by proposing and testing a model drawing upon the theories of implicit personality, social response, emotional contagion, and social interaction. The model proposes friendliness, expertise, and smile as determinants of social presence, personalization, and online service encounter satisfaction. An empirical study confirms the cross-channel applicability of friendliness and expertise as determinants of social presence and personalization. Overall, the study underlines that integration between technology and personal aspects may lead to more social online service encounters.
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Following Langer (1992), this article reviews a series of experimental studies that demonstrate that individuals mindlessly apply social rules and expectations to computers. The first set of studies illustrates how individuals overuse human social categories, applying gender stereotypes to computers and ethnically identifying with computer agents. The second set demonstrates thatpeople exhibit overlearned social behaviors such as politeness and reciprocity toward computers. In the third set of studies, premature cognitive commitments are demonstrated: A specialist television set is perceived as providing better content than a generalist television set. A final series of studies demonstrates the depth of social responses with respect to computer ‘personality.’ Alternative explanations for these findings, such asanthropomorphism and intentional social responses, cannot explain the results. We conclude with an agenda for future research.
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Empirical studies have repeatedly shown that autonomous artificial entities, so-called embodied conversational agents, elicit social behavior on the part of the human interlocutor. Various theoretical approaches have tried to explain this phenomenon: According to the Threshold Model of Social Influence (Blascovich et al., 2002), the social influence of real persons who are represented by avatars will always be high, whereas the influence of an artificial entity depends on the realism of its behavior. Conversely, the Ethopoeia concept (Nass & Moon, 2000) predicts that automatic social reactions are triggered by situations as soon as they include social cues. The presented study evaluates whether participants´ belief in interacting with either an avatar (a virtual representation of a human) or an agent (autonomous virtual person) lead to different social effects. We used a 2 × 2 design with two levels of agency (agent or avatar) and two levels of behavioral realism (showing feedback behavior versus showing no behavior). We found that the belief of interacting with either an avatar or an agent barely resulted in differences with regard to the evaluation of the virtual character or behavioral reactions, whereas higher behavioral realism affected both. It is discussed to what extent the results thus support the Ethopoeia concept.
An investigation of conversational agent relevance, presence, and engagement
  • R M Schuetzler
  • G M Grimes
  • J S Giboney
Schuetzler, R.M., Grimes, G.M., Giboney, J.S.: An investigation of conversational agent relevance, presence, and engagement. In: Proceedings of Americas' Conference on Information Systems (2018)
Iterative development and evaluation of a social conversational agent
  • A Silvervarg
  • A Jönsson
Silvervarg, A., Jönsson, A.: Iterative development and evaluation of a social conversational agent. In: 6th International Joint Conference on Natural Language Processing, pp. 1223-1229 (2013)