Planning to reach for an object changes how the reacher perceives it

Three experiments assessed the influence of the Ebbinghaus illusion on size judgments that preceded verbal, grasp, or touch responses. Prior studies have found reduced effects of the illusion for the grip-scaling component of grasping, and these findings are commonly interpreted as evidence that different visual systems are employed for perceptual judgment and visually guided action. In the current experiments, the magnitude of the illusion was reduced by comparable amounts for grasping and for judgments that preceded grasping (Experiment 1). A similar effect was obtained prior to reaching to touch the targets (Experiment 2). The effect on verbal responses was apparent even when participants were simply instructed that a target touch task would follow the verbal task. After participants had completed a grasping task, the reduction in the magnitude of the illusion remained for a subsequent verbal-response judgment task (Experiment 3). Overall, the studies demonstrate strong connections between action planning and perception.     

African American Single Mothers and Children in Context: A Review of Studies on Risk and Resilience

This paper presents a comprehensive review of research linking single-parent family structure to parenting processes, maternal well-being, and child developmental outcomes among African Americans. The approaches used to study these families, related methodological and conceptual concerns, and the factors linked to maternal well-being, effective parenting processes, family functioning, and child outcomes are addressed. Much work remains to be done on conceptualizing and assessing parenting processes among African Americans in general and single African American mothers in particular. Researchers must examine more carefully the circumstances that foster or impede successful parenting among these mothers. Studies also are needed to disentangle the interactions between economic stress and parenting behavior and to determine the extent to which the findings can be applied to middle-income single African American parents.     

Transsexuals within the Prison System: An International Survey of Correctional Services Policies

This survey examined policies of correctional facilities as they relate to transsexual inmates in the European Community as well as Australia, Canada and the United States. Where formal policies were reported, we inquired into whether these policies addressed the following issues: is hormonal therapy provided and if so under what conditions; are transsexual inmates at greater risk of physical or sexual assault; is surgery ever available to those in the prison system; and are placement decisions of corrections departments influenced by surgical status. We found that only 40% of correctional services departments had either formal or informal policies which addressed issues such as hormone treatment. While more than half of correctional services departments would not initiate hormone therapy, almost half would maintain previously prescribed hormone treatment. Genital status was the overwhelming factor in determining placement in a men's or women's prison. There was no consensus on the risk of either physical or sexual assault of transsexual inmates. The 60% of respondents without formal or informal policies were largely consistent in asserting that policy is developed and implemented on a case management basis in the best interests of the institution and the inmate.     

The Neuropsychology of Heading and Head Trauma in Association Football (Soccer): A Review

Association Football (soccer) is the most popular and widespread sport in the world. A significant proportion of the injuries suffered in football are head injuries involving trauma to the brain. In normal play, head trauma frequently arises from collisions, but some researchers have claimed that it also may arise as a consequence of heading the ball. Although assessments based on biomechanical analyses are equivocal on the potential for brain injury due to football heading, a growing literature seems to support the claim that neuropsychological impairment results from general football play and football heading in particular. However, this review suggests a distinction is required between the neuropsychological effects of concussive and subconcussive head trauma and that all of the neuropsychological studies conducted so far suffer from methodological problems. At best, a few of these studies may be regarded as exploratory. The review concludes that presently, although there is exploratory evidence of subclinical neuropsychological impairment as a consequence of football-related concussions, there is no reliable and certainly no definitive evidence that such impairment occurs as a result of general football play or normal football heading. The neuropsychological consequences of football-related subconcussive effects await confirmatory investigation.     

A cost-effective high-throughput digital system for observation and acquisition of animal behavioral data

We have designed and implemented a low-cost digital system using closed-circuit television cameras coupled to a digital acquisition system for the recording of in vivo behavioral data in rodents and for allowing observation and recording of more than 10 animals simultaneously at a reduced cost, as compared with commercially available solutions. This system has been validated using two experimental rodent models: one involving chemically induced seizures and one assessing appetite and feeding. We present observational results showing comparable or improved levels of accuracy and observer consistency between this new system and traditional methods in these experimental models, discuss advantages of the presented system over conventional analog systems and commercially available digital systems, and propose possible extensions to the system and applications to nonrodent studies.     

The Happiness-Enhancing Activities and Positive Practices Inventory (HAPPI): Development and Validation

Whilst research indicates that happiness-enhancing activities can boost happiness, the measurement of intentional happiness-enhancing activities has thus far been inadequate. This paper describes the development and initial empirical testing of the Happiness-enhancing Activities and Positive Practices Inventory (HAPPI), a self-report inventory designed to measure older adults’ happiness-enhancing activities. An exploratory factor analysis of the HAPPI responses from a population sample of 2,313 older adults identified four factors: self-concordant work, personal recreation and people, spiritual and thought-related, and goal-focused activities. Results demonstrated evidence of reliability, convergent and discriminant validity and support for the predictive utility of the HAPPI. The subscales derived from the factor analysis correlated as expected with measures of subjective well-being and other relevant measures, and showed moderately high subscale intercorrelations and satisfactory internal consistency. The results provide a basis for continuing to develop and clarify the types of intentional activities people engage in. Differences between our results and studies with younger adults are discussed, including possible age-related differences in the types of happiness-enhancing activities engaged in and the potential influence of these activities on happiness. The HAPPI is a relatively brief, easily administered inventory that shows promise as a useful tool for the measurement of happiness-enhancing activities and can be employed to follow cohorts to determine which domains demonstrate the greatest contribution to happiness and other well-being outcomes, which have implications for social policy, education and intervention programmes to enhance well-being.     

Situational specificity of trait influences on drivers’ evaluations and driving behaviour

This study explored the influence of anger and anxiety traits on driver evaluations and behaviour during a simulated drive. Forty-eight licensed drivers completed identical simulated driving tasks during which they rated levels of current anger, calmness and frustration or levels of danger, calmness and difficulty. Anxiety-prone drivers made higher difficultly evaluations and generally drove more cautiously. Anger-prone drivers gave higher ratings of anger and frustration, but their evaluations and anger tendencies were unrelated to their general driving behaviours. When driving behaviours in high and low anger-provoking situations were contrasted, in low anger-provoking situations, drivers higher in trait anger reported more anger and frustration and also drove faster and with more sideward movement. When driving situations were considered separately, although not overall, behaviour and evaluations were related: when forced to move sideward, drivers reported more frustration; when forced to drive more slowly, they reported more anger, and subsequently increased acceleration, throttle pressure and steering wheel use. These relationships were not moderated by trait anger. Irrespective of trait anger, drivers become angry when impeded, or in other anger-provoking situations, only drivers with high trait anger become angry and behaved aggressively in circumstances most would not consider provocative.