A new definition of lying is gaining traction, according to which you lie only if you say what you know to be false. Drawing inspiration from “New Evil Demon” scenarios, I present a battery of counterexamples against this “Knowledge Account” of lying. Along the way, I comment upon the methodology of conceptual analysis, the moral implications of the Knowledge Account, and its ties with knowledge-first epistemology.

Not every speech act can be a lie. A good definition of lying should be able to draw the right distinctions between speech acts that can be lies and speech acts that under no circumstances are lies. This paper shows that no extant account of lying is able to draw the required distinctions. It argues that a definition of lying based on the notion of ‘assertoric commitment’ can succeed where other accounts have failed. Assertoric commitment is analysed in terms of (...) two normative components: ‘accountability’ and ‘discursive responsibility’. The resulting definition of lying draws all the desired distinctions, providing an intensionally adequate analysis of the concept of lying. (shrink)

The potential capacity for robots to deceive has received considerable attention recently. Many papers focus on the technical possibility for a robot to engage in deception for beneficial purposes (e.g. in education or health). In this short experimental paper, I focus on a more paradigmatic case: Robot lying (lying being the textbook example of deception) for nonbeneficial purposes as judged from the human point of view. More precisely, I present an empirical experiment with 399 participants which explores the following three (...) questions: (i) Are ordinary people willing to ascribe intentions to deceive to artificial agents? (ii) Are they as willing to judge a robot lie as a lie as they would be when human agents engage in verbal deception? (iii) Do they blame a lying artificial agent to the same extent as a lying human agent? The response to all three questions is a resounding yes. This, I argue, implies that robot deception and its normative consequences deserve considerably more attention than it presently attracts. (shrink)

This paper defends the simple view that in asserting that p, one lies iff one knows that p is false. Along the way it draws some morals about deception, knowledge, Gettier cases, belief, assertion, and the relationship between first- and higher-order norms.

Lying is a familiar and important concept for virtually all of us, and philosophers have written a lot about what it means to lie. Although it is commonly accepted that an adequate definition of lying captures people's use and understanding of this concept, there have been surprisingly few empirical studies on it. n recent years, however, there is a trend emerging to remedy this lacuna. In this paper, we provide an overview of these studies. Starting from a widely accepted philosophical (...) definition of lying, we focus on the following three questions: Is an intention to deceive required for lying? Is it possible to lie despite saying something true? Can you lie by falsely implicating? (shrink)

This paper introduces and argues for the hypothesis that judgments of testimonial worth are central to our practice of normatively appraising speech. It is argued that judgments of testimonial worth are central both to the judgement that an agent has lied, and to the acceptance of testimony. The hypothesis that, in lying, an agent necessarily displays poor testimonial worth, is shown to resolve a new puzzle about lying, and the recalcitrant problem raised by the existence of bald faced lies, and (...) selfless assertions. It is then shown that the notion of testimonial worth allows us to capture the distinction between taking a speaker at their word, and treating them as a mere indicator of the truth in a way other theories fail to do. (shrink)

Researchers have debated whether there is a relationship between a statement’s truth-value and whether it counts as a lie. One view is that a statement being objectively false is essential to whether it counts as a lie; the opposing view is that a statement’s objective truth-value is inessential to whether it counts as a lie. We report five behavioral experiments that use a novel range of behavioral measures to address this issue. In each case, we found evidence of a relationship. (...) A statement’s truth-value affects how quickly people judge whether it is a lie. When people consider the matter carefully and are told that they might need to justify their answer, they are more likely to categorize a statement as a lie when it is false than when it is true. When given options that inhibit perspective-taking, people tend to not categorize deceptively motivated statements as lies when they are true, even though they still categorize them as lies when they are false. Categorizing a speaker as “lying” leads people to strongly infer that the speaker’s statement is false. People are more likely to spontaneously categorize a statement as a lie when it is false than when it is true. We discuss four different interpretations of relevant findings to date. At present, the best supported interpretation might be that the ordinary lying concept is a prototype concept, with falsity being a centrally important element of the prototypical lie. (shrink)

This thesis addresses philosophical problems concerning improper assertions. The first part considers the issue of defining lying: here, against a standard view, I argue that a lie need not intend to deceive the hearer. I define lying as an insincere assertion, and then resort to speech act theory to develop a detailed account of what an assertion is, and what can make it insincere. Even a sincere assertion, however, can be improper (e.g., it can be false, or unwarranted): in the (...) second part of the thesis, I consider these kinds of impropriety. An influential hypothesis maintains that proper assertions must meet a precise epistemic standard, and several philosophers have tried to identify this standard. After reviewing some difficulties for this approach, I provide an innovative solution to some known puzzles concerning the permissibility of false assertions. In my view, assertions purport to aim at truth, but they are not subject to a norm that requires speakers to assert a proposition only if it is true. (shrink)

Sometimes speakers try to lie and inadvertently assert something true. Subjectivists about lying hold that such speakers are lying despite telling the truth. Objectivists hold that such speakers are not lying: they try to lie but fail. The first aim of this paper is to point to novel cases supporting subjectivism that do not involve speakers inadvertently asserting something true. Its second aim is to use these and other cases to explore the distinction between lying and trying to lie. Which (...) factors can thwart an attempt at lying? In which situations do we judge that a speaker has tried to lie but failed? Attending to these questions not only offers insights into the act of lying, but also helps to scrutinise the objectivist strategy of explaining away intuitions about apparent cases of lying while telling the truth. (shrink)

Lying requires asserting a disbelieved proposition, that much is widely accepted in the debate on how to define lying. But what else is required? Does lying require a particular linguistic manner of expression, such as saying? Does the proposition asserted have to be false (and not merely disbelieved)? And does lying require an intention to deceive? The aim of this chapter is to provide an opinionated introduction to the debates on these questions that takes into account both theoretical considerations and (...) empirical data. (shrink)

According to the subjective view of lying, speakers can lie by asserting a true proposition, as long as they believe this proposition to be false. This view contrasts with the objective view, according to which lying requires the actual falsity of the proposition asserted. The aim of this paper is to draw attention to pairs of assertions that differ only in intuitively redundant content and to show that such pairs of assertions are a reason to favour the subjective view of (...) lying over the objective one. (shrink)

ABSTRACTCompared to expertise in other domains, moral expertise remains a controversial topic. The current research employs a folk-psychological approach to explore which characteristics laypeople...

According to the traditional definition of lying, somebody lies if he or she makes a believed-false statement with the intention to deceive. The traditional definition has recently been challenged by non-deceptionists who use bald-faced lies to underpin their view that the intention to deceive is no necessary condition for lying. We conducted two experiments to test whether their assertions are true. First, we presented one of five scenarios that consisted of three different kinds of lies. Then we asked participants to (...) judge whether the scenario at hand was a lie, whether the speaker intended to deceive somebody, and how they would judge the behavior in terms of morality. As expected, our results indicate that the intention to deceive is not a necessary condition for lying. Participants rated indifferent lies to be lies and judged that no intention to deceive was involved in these cases. In addition, all bald-faced lies were evaluated as lies. However, participants widely ascribed an intention to deceive to bald-faced lies, which thus might not apply as counterexamples against the traditional definition of lying. Besides, lies are judged as morally wrong regardless of an intention to deceive. (shrink)

Assertions are our standard communicative tool for sharing and acquiring information. Recent empirical studies seemingly provide converging evidence that assertions are subject to a factive norm: you are entitled to assert a proposition p only if p is true. All these studies, however, assume that we can treat participants' judgments about what an agent 'should say' as evidence of their intuitions about assertability. This paper argues that this assumption is incorrect, so that the conclusions drawn in these studies are unwarranted. (...) It shows that most people do not interpret statements about what an agent 'should say' as statements about assertability, but rather as statements about what is in the agent's interest to do. It identifies some effective measures to force the intended reading of statements about what an agent 'should say', and shows that when these measures are implemented, people's judgments consistently and overwhelmingly align with non-factive accounts of assertion. (shrink)

Suppose you assert a proposition p that you falsely believe to be false with the intention to deceive your audience. The standard view has it that you lied. This paper argues against orthodoxy: deceptive lying requires that p be in actual fact false, in addition to your intention to deceive by means of untruthfully asserting that p. We proceed as follows. First, an argument is developed for such falsity condition as the non-psychological component of lying. The problem with the standard (...) view, we profess, is exactly that lying is a purely psychological relation between disbelief, assertion, and intention. Then, by scrutinising familiar cases, we revisit the alleged intuitive support for the existence of true lies. It turns out these intuitions can be explained away once we reflect on the characteristic deceptive hallmarks that are associated with the distinction between lying and botched attempts at lying. Finally, we examine the morality of lying in the light of said falsity condition. The resultant view emphasises our moral sensitivity to the practical consequences of acts of lying, while still accommodating those moral considerations that pertain exclusively to the psychological components of lying. (shrink)

Lies are typically defined as believed falsehoods asserted with the intention of deceiving the hearer. A particularly problematic case for this definition is that of false implicatures. These are prototypically cases where the proposition expressed by the speaker's utterance is true, yet an implicature conveyed by this proposition in context is false. However, implicature is a diverse category and whether a blanket statement such as “false implicatures are lies,” as some have argued can account for all of them is open (...) to investigation. We present an experimental investigation of whether naïve participants define different types of implicatures as lies. Our results show that only a couple of types of implicatures were strongly rated as lies by participants. These results suggest that participants distinguish between different types of communicated meanings on linguistic grounds, contributing both to the literature on lying, as well as to theoretical discussions of how different types of meaning are communicated. (shrink)

Lying is an everyday moral phenomenon about which philosophers have written a lot. Not only the moral status of lying has been intensively discussed but also what it means to lie in the first place. Perhaps the most important criterion for an adequate definition of lying is that it fits with people’s understanding and use of this concept. In this light, it comes as a surprise that researchers only recently started to empirically investigate the folk concept of lying. In this (...) paper, we describe three experimental studies which address the following questions: Does a statement need to be objectively false in order to constitute lying? Does lying necessarily include the intention to deceive? Can one lie by omitting relevant facts? (shrink)

To date, existing studies on paltering argue the thesis that paltering is never ethically justifiable; it is akin to deception, since one uses truthful statements with an intention to deceive. This study contends the above essential description and rather argues the thesis: it is a hasty generalisation to conclude that just because paltering has been employed in some fields such as the fields of negotiation and politics to deceive, it is therefore synonymous with deception. Specifically, I show in this study (...) that paltering does not necessarily imply deception, and is distinct from lying. And following a particular interpretation of a moral theory from the global South – ubuntu – paltering is a justified (as well as ethically acceptable) non-disclosure strategy when truthful disclosure would harm one’s relational capacity or jeopardise social cohesion. I am optimistic that this study makes a conceptual contribution to ethical literature on paltering, and introduces fresh perspective to the same by showing how an African moral theory may be used to evaluate paltering. (shrink)

I investigate: to what extent do folk ascriptions of lying differ between casual and courtroom contexts? to what extent does motive to lie influence ascriptions of trust, mental states, and lying judgments? to what extent are lying judgments consistent with previous ascriptions of communicated content? Following the Supreme Court’s Bronston judgment, I expect: averaged lying judgments to be similar in casual and courtroom contexts; motive to lie to influence levels of trust, mental states ascriptions, and patterns of lying judgments; retrospective (...) judgments of lying, after being presented with the state of the world, to be inconsistent with previous judgments of communicated content: participants hold the protagonist responsible for content she did not communicate. I performed a survey experiment on the Qualtrics platform. Participants were recruited through Amazon Mechanical Turk. I employed standard Likert scales and forced-choice questions. I found that: average lying judgments are similar in casual and courtroom contexts; motive to lie decreases trust ascription and increases lying judgment; judgments of lying are inconsistent with previous judgments of communicated content: participants hold the protagonist responsible for content they did not communicate. Perjury ascriptions are inconsistent. The Supreme Court’s worries expressed in the Bronston judgment are well founded. This article helps reforming jury instructions in perjury cases. (shrink)