Units of visual individuation in rhesus macaques: objects or unbound features?

Vision begins with the processing of unbound visual features, which must eventually be bound together into object representations. Such feature binding is required for coherent visual perception, and accordingly has received a considerable amount of study in several domains. Neurophysiological work, often in monkeys, has revealed the details of how and where feature binding occurs in the brain, but methodological limitations have not allowed this research to elucidate just how feature binding operates spontaneously in real-world situations. In contrast, behavioral work with human infants has demonstrated how we use simpler unbound features to individuate and identify objects over time and occlusion in many types of events, but this work has not typically been able to isolate the role of feature binding in such processing. Here we provide a method for assessing the spontaneity and fidelity of feature binding in non-human primates, as this process is utilized in real-world situations, including simple foraging behaviors. Using both looking-time and manual-search measures in a natural environment, we show that free-ranging rhesus macaques (Macaca mulatta) spontaneously bind features in order to individuate objects across time and occlusion in dynamic events. This pattern of results demonstrates that feature binding is used in subtle ways to guide ecologically relevant behavior in a non-human animal, spontaneously and reliably, in its natural environment.     

Recognition of facial affect in psychopathic offenders

The authors examined the reliability of facial affect processing deficits found in psychopathic individuals (R. Blair et al., 2004) and whether they could be modified by attentional set. One hundred eleven offenders, classified using the Psychopathy Checklist--Revised (R. Hare, 2003) and Welsh Anxiety Scale (G. Welsh, 1956), performed a facial affect recognition task under 2 conditions. On the basis of research linking psychopathy, amygdala dysfunction, and deficits in facial affect recognition, the authors predicted that psychopathic offenders would display performance deficits when required to identify the emotional expression of particular faces. In addition, given evidence linking the affective processing deficits in psychopathy to focus of attention, the authors predicted that any deficits in facial affect processing would disappear when participants could anticipate which affective cues would be relevant on a given trial. Contrary to expectation, psychopathic offenders performed as well as controls in both conditions. The authors conclude that the conditions that reveal affective deficits in psychopathic individuals require further specification.     

Effects of comorbid psychopathy on criminal offending and emotion processing in male offenders with antisocial personality disorder

Antisocial personality disorder (ASPD) and psychopathy are two syndromes with substantial construct validity. To clarify relations between these syndromes, the authors evaluated 3 possibilities: (a) that ASPD with psychopathy and ASPD without psychopathy reflect a common underlying pathophysiology; (b) that ASPD with psychopathy and ASPD without psychopathy identify 2 distinct syndromes, similar in some respects; and (c) that most correlates of ASPD reflect its comorbidity with psychopathy. Participants were 472 incarcerated European American men who met Diagnostic and Statistical Manual (4th ed., American Psychiatric Association, 1994) criteria for ASPD and Psychopathy Checklist criteria for psychopathy, who met the criteria for ASPD but not for psychopathy, or who did not meet diagnostic criteria for either ASPD or psychopathy (controls). Both individuals with ASPD only and those with ASPD and psychopathy were characterized by more criminal activity than were controls. In addition, ASPD with psychopathy was associated with more severe criminal behavior and weaker emotion facilitation than ASPD alone. Group differences in the association between emotion dysfunction and criminal behavior suggest tentatively that ASPD with and ASPD without prominent psychopathic features may be distinct syndromes.     

Perceptual restoration in toddlers

Perception by adults is a constant interaction between the top-down effects of prior knowledge and the effects of bottom-up perceptual information. One obvious example of this interaction is the perceptual restoration effect, in which adult listeners have the illusion that a word is complete when a portion of it has been replaced by a masking noise. In four experiments, we demonstrate that toddlers fail to show the illusion of perceptual restoration, even in constrained situations with words they know quite well. Not only do toddlers have less prior knowledge than do adults, but they also appear to place less reliance on the knowledge that they do have, at least in the paradigm tested here. Instead, toddlers appear to be more tied to the perceptual information they receive than are adults.     

The undesired selves of repressors

Previous research has shown that prototypes of familiar categories are preferred over novel exemplars of familiar and unfamiliar categories. The present research demonstrates a reversal of this effect by simply inducing an exploratory mindset. Specifically, participants were asked to judge the attractiveness of dot patterns that represented prototypes of familiar categories, exemplars of familiar categories, or exemplars of novel categories. An exploratory mindset was manipulated by asking participants to imagine the stimuli as stars (versus as peas). Results show that participants in the exploration condition preferred exemplars of novel categories (thereby reversing the classical prototypicality effect), whereas participants in the control condition preferred prototypes. The role of mindsets and familiarity in attractiveness ratings is discussed.     

“Never reflected anywhere”: Body image among ethnoracialized gay and bisexual men

A growing body of literature has highlighted the increased prevalence of body image concerns and associations with health outcomes among gay and bisexual men (GBM). Little research, however, has examined the link between body image and social oppression for ethnoracialized GBM. Using an intersectionality lens and qualitative inductive analysis, data were collected through focus groups and interviews with GBM (n = 61) who identify with one of four ethnoracial groups (Black, East/Southeast Asian, South Asian, Latino/Brazilian). Three main themes emerged: (1) body image idealization in gay/bisexual male culture, (2) negotiating a racialized body image, and (3) negotiating the impact of body image on relationship with self and others. The study results highlighted how multiple forms of oppression (e.g., racism, sexism) intersected with one another to impact the body image and overall well-being among ethnoracialized GBM.     

The influence of texture on judgments of slant and relative distance in a picture with suggested depth

Six surfaces from natural environments with different visual textures were photographed at angles of 60, 65, and 70 deg from perpendicular. Measurements were taken of 24 Ss’ judgments of the inferred angles of slant and inferred midpoints of the six textured surfaces represented in the photographs which were viewed in the frontoparallel plane. Judgments of both slant and relative distance within the photographs were influenced by represented angle of slant and by variations in surface texture.     

Variations in size judgements as a function of surface texture

Adult subjects made monocular size judgements in two experiments in which the independent variables of surface texture and restrictions on viewing conditions were manipulated. Texture density gradients of stimulation had a significant influence of size judgements only under the less reduced conditions of observation when subjects could see other textured surfaces beyond the surfaces over which judgements were made. Identical manipulations of surface texture had earlier been found to have a highly significant influence on relative distance judgements (Newman, 1971). The principally negative results were thus taken to imply that subjects extract different information from the texture density gradient when judging size from that extracted when judging relative distance.     

Bridging the HIV Divide: Stigma,Stories and Serodiscordant Sexuality in the Biomedical Age

At a time when advances in biomedicine have rendered people with HIV non-infectious under certain conditions, much public discourse on HIV remains stuck in a paradigm of ‘risk’, which does little to lessen the divide between people with and without HIV in society or challenge the way intimate relationships across this divide are typically stigmatised as undesirable and problematic. We rarely hear the stories of couples who live with mixed HIV statuses and how they themselves perceive and manage their so called ‘serodiscordance’. In this article, we examine such stories by mixed-status couples in Australia. In stark contrast to the dominant discourse, these couples invoked narratives of love, the everyday unimportance and manageability of HIV, and recent developments in HIV medicine, thereby challenging the way serodiscordant sexuality has been cast in public health research. Drawing on Ken Plummer’s work on hidden sexual stories, we consider not only the content of their stories, but the broader significance of stories to the world in which they are enacted, of storytelling as a rally for social and political recognition and legitimacy. Reflecting on our own role in the co-production of research stories, we argue that by moving marginalised sexual stories out of silence, stigmatised communities and researchers can conjointly and incrementally shape a new public discourse and new forms of ‘intimate citizenship’.     

Impromptu Decisions to Deceive

This research furthers understanding of the factors that induce individuals to choose deception. Its goals were to expand and test a recent account of the cognition of deception, Activation–Decision–Construction–Action Theory (ADCAT), in a mock job interview inviting impromptu deception. Decisions to lie are hypothesized to depend on the truth and other information activated from long‐term memory by the social context. Activated information then guides evaluation of the likely costs of truth telling and benefits of deception; 166 college students participated in the job interview, who learned about the position and then adopted the role of job applicants. Afterward, participants shared their thoughts when responding to five questions from the interview. The most important findings are that the negative expectations of sharing truths and the positive expectations of sharing deceptions each account for unique variance in deciding to lie. Implications for lie reduction and detection are considered. Copyright © 2016 John Wiley & Sons, Ltd.