The relationship between feature binding and consciousness: evidence from asynchronous multi-modal stimuli

Processing the various features from different feature maps and modalities in coherent ways requires a dedicated integration mechanism (“the binding problem”). Many authors have related feature binding to conscious awareness but little is known about how tight this relationship really is. We presented subjects with asynchronous audiovisual stimuli and tested whether the two features were integrated. The results show that binding took place up to 350 ms feature-onset asynchronies, suggesting that integration covers a relatively wide temporal window. We also asked subjects to explicitly judge whether the two features would belong to the same or to the different events. Unsurprisingly, synchrony judgments decreased with increasing asynchrony. Most importantly, feature binding was entirely unaffected by conscious experience: features were bound whether they were experienced as occurring together or as belonging to a separate events, suggesting that the conscious experience of unity is not a prerequisite for, or a direct consequence of binding.     

Genetic Testing and Parkinson Disease: Assessment of Patient Knowledge,Attitudes, and Interest

The most common genetic contributor to late-onset Parkinson disease (PD) is the LRRK2 gene. In order to effectively integrate LRRK2 genetic testing into clinical practice, a strategy tailored to the PD population must be developed. We assessed 168 individuals with PD for baseline knowledge of genetics, perceived risk, and interest and opinions regarding genetic counseling and testing. Most participants felt that they were familiar with general genetics terms but overall knowledge levels were low, with an average score of 55%. The majority of participants thought it was likely they inherited a PD gene (72%), believed genetic testing for PD would be useful (86%), and were interested in genetic testing (59%) and genetic counseling (56%). However, only a few participants had heard of any genetic tests for PD (29%) or LRRK2 (10%). There appears to be a significant level of interest in genetics and genetic testing within the PD population, but a considerable deficit in genetics knowledge and an over-estimation of risk. Genetic education and counseling tools to address these needs were developed to provide patients with the ability to make informed and knowledgeable genetic testing decisions.     

Sex differences in a human analogue of the Radial Arm Maze: the "17-Box Maze Test"

This study investigated sex differences in spatial memory using a human analogue of the Radial Arm Maze: a revision on the Nine Box Maze originally developed by called the 17-Box Maze Test herein. The task encourages allocentric spatial processing, dissociates object from spatial memory, and incorporates a within-participants design to provide measures of location and object, working and reference memory. Healthy adult males and females (26 per group) were administered the 17-Box Maze Test, as well as mental rotation and a verbal IQ test. Females made significantly fewer errors on this task than males. However, post hoc analysis revealed that the significant sex difference was specific to object, rather than location, memory measures. These were medium to large effect sizes. The findings raise the issue of task- and component-specific sexual dimorphism in cognitive mapping.     

Aging and the perception of biological motion

Two experiments examined how observers' ability to perceive biological motion changes with increasing age. The observers discriminated among kinetic figures, depicting walking, jogging, and skipping. The direction, duration, and temporal correspondence of the motions were manipulated. Quantitative differences occurred between the recognition performances of younger and older observers, but these differences were often modest. The older and younger observers' performances were comparable for most conditions at stimulus durations of 400 ms. The older observers also performed well above chance at shorter durations of 240 and 120 ms. Unlike their performance on other 2- or 3-dimensional motion tasks, older observers' ability to perceive biological motion is relatively well preserved.     

Sexism in the pictures of children's readers: East and West Germany compared

School readers from East and West Germany were analyzed to test the hypothesis that children's literature in both socialist and capitalist societies shows stereotyped sex-role bias favoring males, but that socialist literature shows less bias. A content analysis of pictures was done for grades 1 through 4, using a sample of approximately 22% of West German readers and all four of the universally used East German readers. West German books increased in bias from the 1960s to the 1970s. Both countries showed patterns of increasing bias from grades 1 through 4. West Germany was significantly more biased than the East on nine variables. The hypothesis was thus confirmed.The author would like to express gratitude to Dr. Norbert Siara, Ms. Göldner, and the staff of the Institut für Bildungsmedian in Frankfurt (M) for their assistance and the use of their library, from which the BRD sample was taken.     

Analysis of systems influencing renal hemodynamics and sodium excretion. I. Biochemical systems theory

In this article we present a new methodology—Biochemical Systems Theory and Analysis—as an alternative to traditional parametric statistical procedures for investigating differences between risk groups in a population. We review the systems theory and how it can be used to represent a model of processes influencing renal hemodynamics and sodium (Na⁺) excretion. We also discuss the potential for new measures of the biology of common diseases that can emerge from a synergism between systems theory and population-based statistical approaches. This work was supported in part by grants from the Public Health Service, RO1-HL30428, R01-HL39107 and General Clinical Research Center Grant RR0585.     

Threat is a Multidimensional Construct: Exploring the Role of Children’s Threat Appraisals in the Relationship Between Interparental Conflict and Child Adjustment

Past research has emphasised the importance of children’s appraisals of the threat posed by parent conflict for understanding links between interparental conflict and child outcomes. However, little is known about what it is that children actually find threatening about parent conflict. Children (n = 236) aged 10–16 years were recruited to examine the relative contribution of four specific threat subtypes—fear of parent conflict escalating, fear of being drawn into parent conflict, fear of parent conflict resulting in family breakdown, and fear of parent conflict disrupting parent/child attachment relationships—in explaining links between interparental conflict and child internalising adjustment. Results showed that children’s worries about being drawn into parent conflict mediated the relationship between interparental conflict and child internalising adjustment. Fear of interparental conflict disrupting parent/child attachment bonds mediated the relationship between interparental conflict and child internalising problems for girls, but not boys. Results are discussed in terms of the importance of considering multiple dimensions of threat for advancing understanding of the processes underlying the interparental conflict/child adjustment relationship.

Oneness Experience: Looking Through Multiple Lenses

This article defines healthy oneness experience and establishes the progressive, life enhancing components of the experience. The author clarifies the paradox that a cohesive, well-integrated self allows unitive, non-self-definitional experiences. The author attempts to work the cultural/clinical border by exploring oneness phenomena as they occur in art, religion, literature and the clinical consulting room. The author uses psychoanalytic tools to understand non-clinical experiences of oneness. Through compelling accounts of such experiences as described by artists, writers and meditators, psychoanalytic theorizing about oneness is illumined further.     

Weight and health status of inner city African American children: Perceptions of children and their parents

Poor socioeconomic status and African American (AA) ethnicity contribute to an increased risk of obesity for many inner city children. One hundred and forty six AA children and 108 AA parents attending an inner city health fair completed surveys regarding perceptions of their own (or their child's) weight and the impact of weight on health. The children were measured and their body mass indexes were calculated. Thirty-seven percent of the child respondents (n = 52) were at risk of overweight or overweight; of these, 67% perceived themselves as normal weight, and 77% thought their weight was healthy. Weighing more was felt to be healthy by 17% of children and 29% of parents. Of 39 parents whose children were at risk of overweight or overweight, 68% felt their child's weight was normal and 80% thought it was healthy. These results suggest that inner city AA children and their parents often do not recognize being overweight or the health implications of being overweight.