In and out of consciousness: Sustained electrophysiological activity reflects individual differences in perceptual awareness

Although significant advances in our understanding of the cognitive and neural processes involved in conscious awareness have occurred in recent years, the precise mechanisms that support consciousness remain elusive. Examining the neural correlates associated with the moment a stimulus enters or exits conscious awareness is one way to potentially identify the neural mechanisms that give rise to consciousness. In the present study, we recorded neural activity using electroencephalography (EEG) while participants observed a bilateral shape-from-motion (SFM) display. While the display is in motion, the observer perceives an object that is immediately segregated from a noisy background. After the motion stops, the observer's experience of the object remains momentarily in awareness, before it eventually fades out of consciousness back into the noisy background. Consistent with subjective reports of perceptual experience, we observed a prominent sustained posterior contralateral negativity known as the contralateral delay activity (CDA). This activity was sustained only in conditions associated with sustained awareness. Interestingly, the amplitude of the CDA was correlated with individual differences in visual awareness, suggesting that this activity plays a significant role in the maintenance of objects in consciousness. The CDA is typically associated with visual short-term memory (VSTM), suggesting that conscious visual awareness may be mediated by the same neural and cognitive mechanisms that support VSTM. Our results demonstrate that the CDA may reflect the contents of conscious awareness, and therefore can provide a measure to track when information moves in and out of consciousness.     

How two word-trained dogs integrate pointing and naming

Two word-trained dogs were presented with acts of reference in which a human pointed, named objects, or simultaneously did both. The question was whether these dogs would assume co-reference of pointing and naming and thus pick the pointed-to object. Results show that the dogs did indeed assume co-reference of pointing and naming in order to determine the reference of a spoken word, but they did so only when pointing was not in conflict with their previous word knowledge. When pointing and a spoken word conflicted, the dogs preferentially fetched the object by name. This is not surprising since they are trained to fetch objects by name. However, interestingly, in these conflict conditions, the dogs fetched the named objects only after they had initially approached the pointed-to object. We suggest that this shows that the word-trained dogs interpret pointing as a spatial directive, which they integrate into the fetching game, presumably assuming that pointing is relevant to finding the requested object.     

Refining the Preschool Self‐regulation Assessment for Use in Preschool Classrooms

To aid in understanding preschoolers' self‐regulation and refinement of measurement, we examined properties of a field‐based assessment battery of preschooler's self‐regulation, the Preschool Self‐regulation Assessment (PSRA). The PSRA, which includes seven age‐appropriate tasks that tap children's executive control, was administered to 313 preschoolers and then to 261 of these children approximately 3 months later. Teachers reported on children's school readiness (social competence and classroom adjustment) at the end of preschool and kindergarten years, and on academic success in kindergarten. PSRA tasks were examined for ceiling effects at 35–65 months; Pencil Tap, Balance Beam, Toy Wrap and Snack Delay were retained for lack of such effects. Confirmatory factor analyses showed two components at each time point – hot and cool executive control – and cross‐time correlations showed significant stability of individual differences. Four‐year‐old girls and children of higher socioeconomic status outperformed 3‐year‐old boys and those at socioeconomic risk. Children, especially girls, scored higher on hot executive control. Finally, aspects of executive control differentially predicted teacher‐reports of school readiness at both times of assessment, with age, gender and risk status controlled. These selected PSRA tasks, as a shortened battery, have potential for research and applied usage, and findings speak to theoretical understanding of preschoolers' self‐regulation. Copyright © 2012 John Wiley & Sons, Ltd.     

What do targeting positive views on ageing add to a physical activity intervention in older adults? Results from a randomised controlled trial

Objective: Physical activity is a key factor for healthy ageing, yet many older people lead a sedentary lifestyle. Traditional physical activity interventions do not consider the specific needs and views of older adults. As views on ageing are known to be related to health behaviours, the current study evaluates the effectiveness of prompting positive views on ageing within a physical activity intervention.

Design: Randomised controlled trial with three groups aged 65+: Intervention for physical activity with ‘views-on-ageing’-component (n?=?101; IGVoA), and without ‘views-on-ageing’-component (n?=?30; IG), and active control intervention for volunteering (n?=?103; CG).

Main outcome measures: Attitudes towards older adults and physical activity were assessed five weeks before intervention, two weeks, six weeks and 8.5?months after the intervention.

Results: Compared to the IG and CG, positive attitudes towards older adults increased in the IGVoA after the intervention. For IGVoA, the indirect intervention effect on change in activity via change in attitudes towards older adults was reliable.

Conclusion: A ‘views-on-ageing’-component within a physical activity intervention affects change in physical activity via change in views on ageing. Views on ageing are a promising intervention technique to be incorporated into future physical activity interventions for older adults.     

Multiple illness perceptions in older adults: Effects on physical functioning and medication adherence

Objective: Previous research on illness perceptions has focused on single illnesses, but most adults over 65 suffer from multiple illnesses (multimorbidity). This study tests three competing operationalisations of multiple illness perceptions in predicting physical functioning and adherence: (1) main effects and interactions model; (2) peak model with effects of the most prominent illness perception; and (3) combined model with averaged illness perceptions over multiple illnesses.

Design: Longitudinal study in N?=?215 individuals (65–86?years) with multimorbidity at two measurement points over six months. Participants filled in two Brief Illness Perception Questionnaires (B-IPQ) on their two most severe illnesses.

Main outcome measures: Physical functioning, medication adherence.

Results: Factor analyses suggest that the B-IPQ contains three dimensions; consequences, control and timeline. Multiple regression models fit the data best for (1) and (3). Timeline (β?=??.18) and control (β?=?.21) predict adherence in (1); consequences (β?=?.16) and control (β?=?.20) in (3). Physical functioning was significantly predicted by interacting control beliefs in (1; β?=?.13), by peak consequences in (2; β?=??.14) and by consequences (β?=??.15) in (3).

Conclusions: Individuals with multimorbidity hold both distinct and combined perceptions about their illnesses. To understand individual responses to multimorbidity, perceptions about all illnesses and multimorbidity as entity should be examined.     

Substituting objects from consciousness: A review of object substitution masking

Object substitution masking (OSM) occurs when a sparse (e.g., four-dot), temporally trailing mask obscures the visibility of a briefly presented target. Here, we review theories of OSM: those that propose that OSM reflects the interplay between feedforward and feedback/reentrant neural processes, those that predict that feedforward processing alone gives rise to the phenomenon, and theories that focus on cognitive explanations, such as object updating. We discuss how each of these theories accommodates key findings from the OSM literature. In addition, we examine the relationship between OSM and other visual-cognitive phenomena, including object correspondence through occlusion, change blindness, metacontrast masking, backward masking, and visual short-term memory. Finally, we examine the level of processing at which OSM impairs target perception. Collectively, OSM appears to reflect the conditions under which the brain confuses two visual events for one when they are encoded with low spatiotemporal resolution, due to processing resources being otherwise occupied.     

Assessing Violence Risk Among Female IPV Perpetrators: An Examination of the B-SAFER

Intimate partner violence (IPV) is a global problem and one in which frontline assessment and management falls primarily to police. Although IPV is often conceptualized as a male-perpetrated crime, evidence substantiates female IPV perpetration and increased arrest rates, raising important issues for police. This article examines police use of the Brief Spousal Assault Form for the Evaluation of Risk (B-SAFER; Kropp, Hart, & Belfrage, 2005, 2010), a violence risk assessment tool for IPV. The B-SAFER was used to assess and manage 52 women arrested for IPV. When compared to Belfrage and Strand (2008), who examined men arrested for IPV in the same sample, women possessed fewer risk factors. Risk factors were related to summary risk judgments, although differences existed between genders and risk judgments were not related to management recommendations. Results suggest that risk factors, in addition to those in the B-SAFER, are required to assess risk for female IPV.     

Mirror reading of words and numbers: Practice and transfer effects

It remains unknown whether mirror reading represents a genuine text processing skill or is based on recognition of visual patterns. The present study attempts to determine whether (1) systematic practice with a particular mirrored typography also improves reading performance for other mirrored typographies, and whether (2) this transfer extends from lexical to numerical material and vice versa. The results show that short-term intensive practice with mirror-reversed words significantly improves reading performance not only for the trained typography but also for other mirrored typographies and mirror-reversed Arabic digits. Practice with mirror-reversed Arabic digits showed a mixed pattern of transfer effects with regard to other digit transformations and there were no transfer effects to lexical material. Hence, for lexical material, at least, improvement after training seems to be based on generalized skill with transfer effects beyond lexical material, rather than on mere improvement of visual recognition of the material used in training.     

The Mutual Development of Intersubjectivity and Metacognitive Capacity in the Psychotherapy for Persons with Schizophrenia

While cognitive behavioral approaches have been shown to help some individuals with schizophrenia, these approaches may be limited when working with patients with impairments in the metacognitive abilities required to form complex and integrated representations of themselves and others. In response, this paper explores the possibility that a key to working with patients with relatively impaired self-reflectivity lies in explicitly focusing on a patient’s intersubjective experience within psychotherapy. We offer theoretical and empirical support for the assertion that the tolerance and capacity for intersubjectivity is a basis for the development of self-reflectivity in general. We also explore how the fostering of intersubjective processes in psychotherapy might enable some patients to form more complex ideas about themselves and so better ward off delusions in the face of the challenges of daily life. To illustrate these principles we present the case of a patient with tenaciously held delusions and limited capacity for self-reflection. We discuss when and how the therapist’s awareness and verbalization of intersubjective processes within session allowed her and the patient to develop more complex and consensually valid ideas about him as a being in the world, which then assisted the patient to achieve improvements in a number of domains in his life.     

Acting for reasons, apt action, and knowledge

I argue for the view that there are important similarities between knowledge and acting for a normative reason. I interpret acting for a normative reason in terms of Sosa’s notion of an apt performance. Actions that are done for a normative reason are normatively apt actions. They are in accordance with a normative reason because of a competence to act in accordance with normative reasons. I argue that, if Sosa’s account of knowledge as apt belief is correct, this means that acting for a normative reason is in many respects similar to knowledge. In order to strengthen Sosa’s account of knowledge, I propose to supplement it with an appeal to sub-competences. This clarifies how this account can deal with certain Gettier cases, and it helps to understand how exactly acting for a normative reason is similar to apt belief.