Presents a theory of bullshit, how it differs from lying, how those who engage in it change the rules of conversation, and how indulgence in bullshit can alter a person's ability to tell the truth.

Obscurity of expression is considered a flaw. Not so, however, in the speech or writing of intellectual gurus. All too often, what readers do is judge profound what they have failed to grasp. Here I try to explain this guru effect by looking at the psychology of trust and interpretation, at the role of authority and argumentation, and at the effects of these dispositions and processes when they operate at a population level where, I argue, a runaway phenomenon of overappreciation (...) may take place. (shrink)

Persuasive social robots can influence human behavior through giving advice. The current study investigates whether references to prior discourse and signals of empathy make an advice-giving robot an even more effective persuader and whether participants follow the robot’s advice and drink even more water when the robot additionally uses these strategies. We recruited students and university staff for a lab-study in which three different robot personalities on the same robot type presented health-related information. In one condition, the robot gave advice (...) and referred to something mentioned earlier in the conversation (i.e., to dialog history), in another condition, the robot gave advice and used empathic signals, and in the third condition, the robot gave advice only. Our results show that participants drank significantly more when the advice-giving robot also used the persuasive strategies of empathy and references to dialog history than when the robot only gave advice. This study shows that both strategies increase the persuasiveness of the robot and makes it more influential. (shrink)

Decades of research have investigated the complex role of source credibility in attitude persuasion. Current theories of persuasion predict that when messages are thoughtfully scrutinized, argument strength will tend to have a greater effect on attitudes than source credibility. Source credibility can affect highly elaborated attitudes, however, when individuals evaluate material that elicits low attitude extremity. A recently proposed model called the guru effect predicts that source credibility can also cause attitudinal change by biasing the interpretation of pragmatically ambiguous material. (...) The present studies integrate models of explanatory pragmatics and persuasion in order to empirically assess these hypotheses. Experiment 1 found that text difficulty and attitude neutrality reflect independent persuasion variables. Experiment 2 found that higher source credibility causes more favorable attitudes toward messages eliciting low attitude extremity. Text difficulty was not found to have a significant effect on attitudes. These results confirm the predictions of prior social cognition research but no do not support the guru effect model. The implications of these studies for pragmatics and persuasion research as well as the value of interdisciplinary research between these fields are discussed. (shrink)

In this paper, we analyze what effects indicators of a shared situation have on a speaker’s persuasiveness by investigating how a robot’s advice is received when it indicates that it is sharing the situational context with its user. In our experiment, 80 participants interacted with a robot that referred to aspects of the shared context: Face tracking indicated that the robot saw the participant, incremental feedback suggested that the robot was following their actions, and comments about, and gestures towards, the (...) shared physical situation and linguistic references to the dialog history indicated to participants that the robot had learned from the interaction and perceived its surroundings. The results show that especially the linguistic and gestural references to the shared context have a significant influence on participants’ compliance with the robot’s suggestions. Thus, indicating that it is ‘in the same boat’ with the user, i.e. that it is sharing the situational context, increases a robot’s persuasiveness during advice giving. (shrink)

Mental or computer simulation of cause and effect of certain behaviors is a recognized approach to changing one’s attitude or triggering an action. Meanwhile, psychology research results suggest that frequency of simulation may affect the corresponding persuasiveness. This paper argues that with always-on sensing and data-driven visualization technologies, interactive tangible systems can be designed to simulate hypothetical outcomes of real-life behaviors in everyday contexts, which repeatedly stimulate users’ imagination of behavioral consequences and thereby behavioral intentions. To investigate the effect, a (...) working prototype of Incingarette, including a smart ashtray in connection with a digital picture frame, was built. When the ashtray is used for smoking, the digital picture is incrementally covered by virtual dust. Field trials involved participants in five daily smoking sessions. Post-session surveys show increasingly stronger perceived causality between smoking and the simulated outcomes, increasingly more vivid mental imagery of consequences, and increasingly intense intention to reduce smoking. Results suggest that repeatedly presenting simulated outcomes cognitively linked to real-life behaviors can increase behavioral intentions. (shrink)