When Fluency Signals Truth: Prior Successful Reliance on Fluency Moderates the Impact of Fluency on Truth Judgments

Repeated statements are more frequently judged to be true. One position relates this so‐called “truth effect” to metacognitive experiences of fluency, suggesting that repeated statements are more frequently judged to be true because they are processed more fluently. Although most prior research focused on why repetition influences truth judgments, considerably less is known about when fluency is used as information. The present research addresses this question and investigates whether reliance on fluency is moderated by learning experiences. Specifically, we focus on changes in the reliance on fluency over the course of time. A series of experiments reveals that fluency is more likely to be used in truth judgments when previous reliance on fluency has resulted in valid judgments, compared with when previous reliance on fluency was misleading. These findings suggest that reliance on fluency in judgments is a finely tuned process that takes prior experiences with fluency‐based judgments into account. Copyright © 2013 John Wiley & Sons, Ltd.     

Fluency and disfluency; Illusion and identification

At approximately the same time, two lines of research have studied disfluencies from different orientations—one in stuttering and the other in normal speech. In certain important respects the findings of these separate lines differ. Resolution of these differences, which is particularly important for understanding stuttering in its relation to disfluency and fluency, has been precluded because the two research areas have remained essentially isolated from each other.Progress in understanding stuttering would benefit considerably from adequate attention to the findings of research on disfluency in normal speech, which already has yielded a substantial amount of information pertinent to the concepts of fluency and disfluency; the nature and extent of disfluency; the linguistic and cognitive significance of disfluencies; and the differentiation between normal and abnormal disfluency.     

Aging,Encoding Fluency,and Metacognitive Monitoring

ABSTRACT

Encoding fluency (how rapidly one generates a mediator for a new association) may be a cue used to judge one's own learning. To evaluate age differences in utilization of this cue, older and younger adults were instructed to use interactive imagery to study paired associates, pressing a button to indicate when an image had been formed for a given pair. A judgment of learning (JOL) was also made immediately after each pair had been studied. Hence, at least two cues pertaining to encoding fluency—whether an image had been formed (a diagnostic cue) and the latency of formation (a nondiagnostic one)—were available when making JOLs. Age equivalence was found in JOL accuracy, and JOLs for both age groups were positively related to imagery formation and were negatively related to the latency of image formation. Moreover, subjectively judged latency correlated higher with JOLs than actual (objective) latency, supporting the hypothesis that perceived fluency is a cue used in constructing JOLs.     

Perceived Source Variability Versus Familiarity: Testing Competing Explanations for the Truth Effect

This article tests 2 competing explanations for the truth effect, the finding that repeated statements are believed more than new statements. Previous research has put forth 2 explanations for this effect—subjective familiarity and perceived source variability. The subjective familiarity explanation holds that repeated statements feel more familiar and are therefore believed more than new statements. This explanation has received strong support in the literature. The source variability explanation holds that people attribute repeated statements to different sources; this belief, that multiple sources endorse the statement, increases belief in repeated statements relative to new statements attributed to a single source. However, previous studies testing this explanation have confounded source variability with source credibility. This research aims to tease apart the effects of subjective familiarity and source variability while holding source credibility constant across conditions. Results of the first 2 experiments manipulating number of sources and measuring recognition implicate subjective familiarity rather than perceived source variability as the mechanism underlying the truth effect. However, the third study demonstrates that source variability does enhance belief in repeated statements that are initially perceived as low in plausibility. Theoretical and practical implications are discussed.     

Covariates of Production and Perseveration on Tests of Phonemic,Semantic and Alternating Fluency in Normal Aging

ABSTRACT

Standard measures of phonemic and semantic fluency, as well as fluency measures that impose additional demands upon set-switching were administered to younger and older adults. No age effect was found for total output on semantic fluency, while older participants generated significantly more responses relative to their younger counterparts on the phonemic measure. However, older adults made significantly more perseverative errors on both these measures. For tests of alternating fluency, only where participants were required to switch between two semantic dimensions, was an age deficit observed. Although the correlation between phonemic repetitions and age remained significant when performance on the Digit Symbol Test or a measure of fluid intelligence was partialled out, age effects for semantic repetitions and semantic alternating fluency were substantially reduced. The age benefit for number of correct responses upon phonemic fluency was significantly attenuated when a measure of crystallized intelligence was entered as a control variable. The theoretical and practical implications of these results are discussed.     

Aging Effects on Recollection and Familiarity: The Role of White Matter Hyperintensities

ABSTRACT

Previous studies have indicated that aging is associated with declines in recollection whereas familiarity-based recognition is left largely unaffected. The brain changes underlying these recollection declines are yet not well understood. In the current study we examined the role of white matter integrity as measured by white matter hyperintensities (WMH) on age-related changes in recollection and familiarity. Recognition was measured using a remember/know procedure (Experiment 1) and a source-memory process-dissociation procedure (Experiment 2). Robust age related declines in recollection were observed, but there was no evidence that white matter damage was related to the observed memory declines. Although future studies with larger samples will be necessary to fully characterize the role of WMH in normal age-related declines in different types of memory, the results suggest that declines in recollection are not strongly related to the brain changes indexed by WMHs.     

Familiarity,relative distinctiveness,and the generation effect

In Experiment 1, psychology experts and novices showed generation effects with both psychology related and other words. In Experiment 2, music experts who were sports novices and sports experts who were music novices showed a generation effect in a recognition test for all words regardless of domain (music or sports). Moreover, the effect was greater for words from the subjects’ “nonexpertise” area. In Experiments 3A and 3B, music experts showed a greater generation effect for sports words than for music words in a free recall test but only when the sports and music words were studied together. These results are inconsistent with the semantic elaboration -requirement for the generation effect that predicts less of an effect, if any, with less familiar materials. Rather, they provide evidence for the idea that the generation effect is influenced by relative distinctiveness of the to-be-remembered items.     

Remembering, Familiarity, and Source Monitoring

Two experiments investigated recollective experience in a source monitoring task. Subjects saw an array of objects and performed, watched, or imagined actions involving pairs of objects. In a subsequent recognition test, subjects indicated whether their recognition judgements were made on the basis of conscious recollective experience (“remember” responses), or on some other basis such as familiarity (“know” responses). The proportions of correct “remember” responses for both objects and actions decreased from performed, through watched, to imagined actions, whereas the proportions of correct “know” responses were uninfluenced by the source of the memories. In addition, the relationship between recollective experience and accuracy of source judgement varied across sources. Source accuracy for performed actions was obtained only in “remember” responses, whereas source accuracy for imagined actions was obtained only in “know” responses. Source accuracy for watched actions was obtained in both “remember” and “know” responses. The findings suggest that the types of memory attributes available at retrieval determine the quality of subsequent memory experience, and it is proposed that memories with strongly self-referential attributes (arising from performed actions) powerfully cue recollective experience during retrieval.     

Fluency, familiarity, aging, and the illusion of truth

Research has shown that repeated statements are rated as more credible than new statements. However, little research has examined whether such "illusions of truth" can be produced by contextual (nonmnemonic) influences, or compared to the magnitude of these illusions in younger and older adults. In two experiments, we examined how manipulations of perceptual and conceptual fluency influenced truth and familiarity ratings made by young and older adults. Stimuli were claims about companies or products varying in normative familiarity. Results showed only small effects of perceptual fluency on rated truth or familiarity. In contrast, manipulating conceptual fluency via semantic/textual context had much larger effects on rated truth and familiarity, with the effects modulated by normative company familiarity such that fluency biases were larger for lesser-known companies. In both experiments, young and older adults were equally susceptible to fluency-based biases.     

Fluency,disfluency, dysfluency,and stuttering

The appropriate use of words, particularly certain words, is a persisting problem in the field of stuttering. This paper discusses some of the misuse involving four words basic to the field.     

Anchoring,Familiarity, and Confidence in the Detection of Deception

Anchoring in judgments is the tendency for the final judgment to be biased toward the initial estimate through insufficient adjustment. In the context of the detection of deception, it has been used to explain phenomena such as negative absolute leakage and the truthfulness bias. We examined the influence of order of judgment type on attitude ratings, accuracy, and the truthfulness bias. Receivers of communications should tend to anchor their judgments on the sender's attitudinal position if asked to make attitude judgments first and on the sender's behavior if asked to make truthfulness judgments first. The results partly support these predictions. Negative absolute leakage, accuracy, and the truthfulness bias were not significantly different for those who made attitude judgments before truthfulness judgments. However, results show that accuracy decreased as the session continued and there was no difference in the confidence with which truth and deception judgments were made, but there was a positive relation between confidence and truthfulness bias.     

Familiarity, redundancy, and the spatial control of visual attention

Highly familiar letter sequences (English words) in noncued portions of a tachistoscopic display were shown to substantially reduce accuracy of partial report. These findings suggest that in addition to facilitating character scanning, familiarity may operate in automatically directing attentional resources to a particular spatial region of a display. Such attentional capture may be disruptive if the material to be reported is presented at another location.     

Content,Illusion, Partition

Philosophical Studies -     

Truth,omniscience, and the Knower

Conclusion Let us sum up.The paradox of the Knower poses a direct and formal challenge to the coherence of common notions of knowledge and truth. We've considered a number of ways one might try to meet that challenge: propositional views of truth and knowledge, redundancy or operator views, and appeal to hierarchy of various sorts. Mere appeal to propositions or operators, however, seems to be inadequate to the task of the Knower, at least if unsupplemented by an auxiliary recourse to hierarchy. But the cost of hierarchy appears to be an abandonment of any notion of all truth or of omniscience. What the contradictions of the Knower seem to demand, then, is at least an abandonment of these.As noted in the introduction, the argument is complicated enough that one must be wary of dogmatic and precipitate conclusions. One may legitimately wonder whether some new response, or some variation on an old one, will yet offer a way out.Far too often, however, it is asked what has gone wrong with paradox rather than what paradox may have to teach us. What the Knower may have to teach us, I think, is that there really can be no coherent notion of all truth and really can be no coherent notion of omniscience. In its own way that conclusion is perhaps as humbling as is any traditional notion of God.I am grateful to C. Anthony Anderson, Robert F. Barnes, David Boyer, Tyler Burge, Evan W. Conyers, and Allen Hazen for correspondence and discussion regarding basic ideas, and owe a special debt to David Boyer and Evan W. Conyers for careful criticism of earlier drafts.     

Situational Familiarity,Efficacy Expectations,and the Process of Credibility Attribution

Four experiments investigated the influence of situational familiarity within a judgmental context on the process of credibility attribution. We predicted that high familiarity with a situation would lead to higher efficacy expectations for, and a more pronounced use of, verbal information when making judgments of credibility. Under low situational familiarity, judges were expected to experience higher efficacy expectations for, and a more pronounced use of, nonverbal information. In Experiments 1 through 4, participants under low or high situational familiarity saw a film in which nonverbal cues (fidgety vs. calm movements) and verbal content cues (low vs. high plausibility) were manipulated. As predicted, when familiarity was low, only the nonverbal cues influenced participants’ judgments of credibility. In contrast, participants in the high familiarity condition used only the verbal cues. Experiments 3 and 4 showed that efficacy expectations regarding verbal and nonverbal information, but not processing motivation, drive this familiarity effect.