Is visual search really like foraging?

The visual-search paradigm provides a controlled and easy to implement experimental situation in which to study the search process. However, little work has been carried out in humans to investigate the extent to which traditional visual-search tasks are similar to more general search or foraging. Here we report results from a task in which search involves walking around a room and leaning down to inspect individual locations. Consistent with more traditional search tasks, search time increases linearly with display size, and the target-present to target-absent search slope is 1:2. However, although rechecking of locations did occur, compared to more traditional search it was relatively rare, suggesting an increased role for memory.     

Modalities of memory: Is reading lips like hearing voices?

Functional similarities in verbal memory performance across presentation modalities (written, heard, lipread) are often taken to point to a common underlying representational form upon which the modalities converge. We show here instead that the pattern of performance depends critically on presentation modality and different mechanisms give rise to superficially similar effects across modalities. Lipread recency is underpinned by different mechanisms to auditory recency, and while the effect of an auditory suffix on an auditory list is due to the perceptual grouping of the suffix with the list, the corresponding effect with lipread speech is due to misidentification of the lexical content of the lipread suffix. Further, while a lipread suffix does not disrupt auditory recency, an auditory suffix does disrupt recency for lipread lists. However, this effect is due to attentional capture ensuing from the presentation of an unexpected auditory event, and is evident both with verbal and nonverbal auditory suffixes. These findings add to a growing body of evidence that short-term verbal memory performance is determined by modality-specific perceptual and motor processes, rather than by the storage and manipulation of phonological representations.     

Is Jesus Still “ACTing Up”?

In this essay, I discuss the continuing relevance of Jesus ACTED UP in three dimensions: the pastoral, the academic, and the self-critical. Framing the essay with personal reflections, I first describe how the book continues to meet the pastoral needs of the LGBTIQ community, especially by channeling our rage in a constructive way. I then describe how the book continues to be relevant to the academic community by speaking truth to power. Finally, I describe how the book continues to speak to the LGBTIQ community by cautioning against a turning inwards of oneself (i.e. incurvatus in se). I conclude the essay with a personal note of gratitude to Bob Shore-Goss for the ways in which he personally embodies these three dimensions in his life and work.     

Is the map in our head oriented north?

We examined how a highly familiar environmental space--one's city of residence--is represented in memory. Twenty-six participants faced a photo-realistic virtual model of their hometown and completed a task in which they pointed to familiar target locations from various orientations. Each participant's performance was most accurate when he or she was facing north, and errors increased as participants' deviation from a north-facing orientation increased. Pointing errors and latencies were not related to the distance between participants' initial locations and the target locations. Our results are inconsistent with accounts of orientation-free memory and with theories assuming that the storage of spatial knowledge depends on local reference frames. Although participants recognized familiar local views in their initial locations, their strategy for pointing relied on a single, north-oriented reference frame that was likely acquired from maps rather than experience from daily exploration. Even though participants had spent significantly more time navigating the city than looking at maps, their pointing behavior seemed to rely on a north-oriented mental map.     

Is obesity treated like a contagious disease?

The behavioral avoidance of people with obesity is well documented, but its psychological basis is poorly understood. Based upon a disease avoidance account of stigmatization, we tested whether a person with obesity triggers equivalent self-reported emotional and avoidant-based responses as a contagious disease (i.e., influenza). Two hundred and sixty-four participants rated images depicting real disease signs (i.e., person with influenza), false alarms (i.e., person with obesity), person with facial bruising (i.e., negative control), and a healthy control for induced emotion and willingness for contact along increasing levels of physical proximity. Consistent with our prediction, as the prospect for contact became more intimate, self-reported avoidance was equivalent in the influenza and obese target conditions, with both significantly exceeding reactions to the negative and healthy controls. In addition, participants reported greatest levels of disgust toward the obese and influenza target conditions. These results are consistent with an evolved predisposition to avoid individuals with disease signs. Implicit avoidance occurs even when participants know explicitly that such signs—here, obese body form—result from a noncontagious condition. Our findings provide important evidence for a disease avoidance explanation of the stigmatization of people with obesity.     

Is there a logical slippery slope from voluntary to nonvoluntary euthanasia?

John Keown has constructed a logical slippery slope argument from voluntary euthanasia (VAE) to nonvoluntary euthanasia (NVAE). VAE if justified implies that death can be of overall benefit, in which case it should also be facilitated in those who cannot consent (NVAE). Hallvard Lillehammer asserts that Keown's argument rests on a fallacy. However, pace Lillehammer, it can be restated to escape this fallacy. Its validity is confirmed by applying to VAE some well-established general principles of medical decision making. Thus, either VAE and NVAE must be accepted together or, if NVAE is regarded as unacceptable, VAE should also be rejected.     

Raised by Depressed Parents: Is it an Environmental Risk?

The mechanisms explaining how parental depression compromises healthy child development are complex and multifaceted, with genetic and environmental pathways intertwined. Reexamination of whether and how maternal and paternal depression serve as environmental risk factors is important because such an investigation can be helpful to identify modifiable mechanisms that are accessible to interventions. We review studies that have employed designs that isolate the effects of the environment from genetic influences, including adoption studies and children of twins studies. Findings indicate that maternal depression is an environmental risk factor for the emotional, behavioral, and neurobiological development of children. Although more studies are needed, preliminary findings suggest that paternal depression appears to be a weaker environmental risk as compared to maternal depression, at least during infancy and toddlerhood. Implications for theory and future research are discussed.     

Reconsidering illness-related goals: Is discrepancy resolved by confronting emotions?

The aim of this study was to examine prospectively whether patients with an illness imposing self-management demands (29 asthma patients and 23 diabetic patients) would adjust their evaluations of discrepant illness-related goals. Goals were considered discrepant when patients rated them as important but less attainable, or as less important but attainable. We hypothesized that discrepancy would be resolved by adjusting attainability evaluations and that shifts in these evaluations would be more present in important but less attainable goals. We also hypothesized that shifts in evaluations of discrepant goals would be promoted by engaging in confronting emotions associated with the goal as a first step in coming to terms with discrepant goals. Results confirmed the first, but not the second hypothesis as confronting emotions proved to increase discrepancy evaluations of illness-related goals. These findings are discussed with an emphasis on confronting emotions as a strategy for coming to terms with the experience of discrepancy.     

Is the Humean defeated by induction?

Many necessitarians about cause and law (Armstrong, What is a law of nature. Cambridge University Press, Cambridge, 1983; Mumford, Laws in nature. Routledge Studies in Twentieth-Century Philosophy. Routledge, Abingdon, 2004; Bird, Nature’s metaphysics: Laws and properties. Oxford University Press, Oxford, 2007) have argued that Humeans are unable to justify their inductive inferences, as Humean laws are nothing but the sum of their instances. In this paper I argue against these necessitarian claims. I show that Armstrong is committed to the explanatory value of Humean laws (in the form of universally quantified statements), and that contra Armstrong, brute regularities often do have genuine explanatory value. I finish with a Humean attempt at a probabilistic justification of induction, but this fails due to its assumption that the proportionality syllogism is justified. Although this attempt fails, I nonetheless show that the Humean is at least as justified in reasoning inductively as Armstrong.     

Is science like a crossword puzzle? Foundherentist conceptions of scientific warrant

This paper argues that the crossword puzzle analogy is great for scientific rationality, but not scientific warrant. It provides a critical analysis of foundherentist conceptions of scientific warrant, especially that of Susan Haack, and closely related positions, such as non-doxastic coherentism. Foundherentism takes the middle ground between foundationalism and coherentism. The main idea is that warrant, including that of scientific theories, is like warrant of crossword entries: the degree to which a theory is warranted depends on one’s observations, the extent to which it coheres with one’s other scientific theories and whether one’s evidence includes a sufficiently large portion of the relevant evidence. I identify three problems for a foundherentist conception of scientific warrant, two of which are also problems for the image of science as a crossword puzzle. First, Haack’s conceptions of personal and social warrant of scientific theories are incompatible. Second, the notion of warrant defeaters is crucial to any account of warrant, but foundherentism cannot accommodate certain warrant defeaters. Third, Haack’s treatment of inconsistent evidence renders her account of social warrant for scientific theories implausible. Finally, I suggest that switching from the objective notion of warrant to the subjective notion of rationality might save foundherentism about scientific theories and the image of science as a crossword puzzle. I also draw lessons for social epistemology generally by applying the distinction between warrant and rationality to non-doxastic coherentism and Paul Faulkner’s hybrid theory of testimonial warrant.     

Judgment by Outcomes: Why Is It Interesting? A Reply to Hershey and Baron: "Judgment by Outcomes: When Is It Justified?"

Hershey and Baron (1992) have criticized the validity of research on judgment by outcomes, which fail to establish that this judgment constitutes a bias. This reply argues that Hershey and Baron′s criticism is based on a probabilistic version of affirming the consequent and that judgment by outcomes can be studied independently of the issue of bias.     

Is auditory awareness negativity confounded by performance?

Research suggests that the electrophysiological correlates of consciousness are similar in hearing as in vision: the auditory awareness negativity (AAN) and the late positivity (LP). However, from a recently proposed signal-detection perspective, these correlates may be confounded by performance, as the strength of the internal responses differs between aware and unaware trials. Here, we tried to apply this signal-detection approach to correct for performance in an auditory discrimination and detection task (N = 28). A large proportion of subjects had to be excluded because even a small response bias distorted the correction. For the remaining subjects, the correction mainly increased noise in the measurement. Furthermore, the signal-detection approach is theoretically problematic because it may isolate post-perceptual processes and eliminate awareness-related activity. Therefore, we conclude that AAN and LP are not confounded by performance and that the contrastive analysis identifies both as correlates of awareness.     

Is stimulus persistence affected by eye movements?

Summary When an eye movement intervenes between the presentation of a target and a mask, the mask has its effect on material projected on the same retinal position. Davidson, Fox, and Dick (1973) reported, however, that the mask appears to be positioned in real space, a suggestion which implies integration of visible information across the eye movement. The present note argues that their conclusion does not follow from their data.     

Is behavior analysis undergoing selection by consequences?

The legacy of B. F. Skinner's life is a natural science of behavior. The generality of its basic functional relations has led, by induction, to the unifying principle of selection by consequences, which accounts for morphological, behavioral, and cultural evolution. This principle both predicts and explains the observation that the science itself is becoming the object of differential selection in our culture. Public policy is increasingly being framed in terms of the effects of consequences on behavior, as illustrated by examples from education, economics, and politics. Survival of our culture may depend on our skill in managing this process.     

Is Milkman a superhero like Batman? Constituent morphological priming in compound words

In the present study, we examined morphological decomposition of Basque compound words in a series of masked priming lexical decision experiments. In Experiment 1, Basque compound words could be briefly preceded by other compounds that shared either the first or second constituent, or by unrelated noncompound words. Results showed a significant priming effect for words that shared a constituent, independently of its position. In Experiment 2, compound words were preceded by other compound words that shared one of their constituents, but in a different lexeme position (e.g., the first constituent of the compound that acted as a prime was the second constituent of the compound that acted as a target). Results again showed a constituent priming effect (i.e., location in the string is not necessary for priming to occur). In Experiment 3, we demonstrated that these priming effects were not due to mere form overlap: pairs of noncompound words that shared either the beginning or the ending chunk did not produce a priming effect. Taken together, the present results converge with previous data on orthographic/morphological priming and provide evidence favouring early morphological decomposition.     

Feedback Sign Effect on Motivation: Is it Moderated by Regulatory Focus?

Quoi qu’en pense le sens commun qui incite à croire que le feedback (positif vs négatif) a des retombées décisives sur la motivation, l’enemble de la littérature n’apporte pas d’informations claires précisant quand et comment le feedback positif ou négatif accroît ou abaisse la motivation (voir par exemple Kluger & DeNisi, 1996 ). La variabilité dans l’impact du feedback peut être expliquée par la théorie de l’autorégulation ( Higgins, 1997, 1998 ). Plus précisément, des niveaux relativement élevés de motivation sont provoqués aussi bien par l’échec sous focalisation de prévention (manquer à ses obligations) que par le succès sous focalisation de promotion (réaliser un désir). Au cours de deux expériences, la focalisation régulatrice a été opérationnalisée par une manipulation des facteurs de situation (scénarios) et par trois mesures de différences individuelles (les valuers, les professions et les raisons de choisir tel emploi). Les résultats de ces travaux confirment les hypothéses avec les différentes opérationnalisations. D’autres expériences devraient explorer la probable interaction triple entre la focalisation régulatrice de situation, la focalisation régulatrice chronique et la feedback. Despite our common sense notion that indicates that feedback sign (positive vs. negative) has a decisive effect on motivation, the vast literature has no clear specifications regarding when and how positive (negative) feedback increases or decreases motivation (e.g. Kluger & DeNisi, 1996 ). The variability in feedback sign effects can be explained by self‐regulation theory ( Higgins, 1997, 1998 ). Specifically, relatively high levels of motivation are induced either by failure under prevention focus (failure to meet obligations) or by success under promotion focus (fulfilling a desire). In two experiments, regulatory focus was operationalised by a manipulation of situational factors (scenarios) and by three measures of individual differences (values, occupations, and the motives for choosing one's job). Results from these experiments corroborated the hypotheses with all the different operationalisations. Future experiments should investigate the possible three‐way interaction between situational regulatory focus, chronic regulatory focus, and feedback sign.     

Representing others' actions: just like one's own?

Previous research has shown that observing others' actions can affect individual performance of the same actions. In the present study, we developed a new paradigm to investigate whether and how complementary actions at the disposal of another agent are represented and influence one's own actions. A spatial compatibility task was distributed among two people so that each participant took care of one of two responses. The identical task was performed alone and alongside another participant. There was a spatial compatibility effect in the group setting only. It was similar to the effect obtained when one person took care of both responses. This result suggests that one's own actions and others' actions are represented in a functionally equivalent way.     

To Hook Up or Date: Which Gender Benefits?

Hooking up on college campuses has become more frequent than dating in heterosexual sexual interaction. Analysis of the relative benefits and costs associated with dating and hooking up suggest that women benefit more from dating while men benefit more from hooking up. U.S students (150 women, 71 men) at a midsized southeastern university indicated preferences for dating and hooking up across a number of situations and indicated the perceived benefits and risks associated with each. As hypothesized, in most situations women more than men preferred dating and men more than women preferred hooking up. Both genders perceived similar benefits and risks to dating and hooking up; differences provided insight into the sexual motives of college women and men.