Evidence Supporting the Importance of Peripheral Visual Information for the Directional Control of Aiming Movement

The focus of the present study was on determining whether the high level of directional accuracy found in aiming studies in which the subjects can see their hand in the visual periphery supports the existence of a kinetic visual channel or, rather, the advantage of binocular over monocular vision for movement directional control. The limits of this kinetic visual channel were also explored. The results of the 1st experiment indicated that seeing one's hand in the visual periphery is sufficient to ensure optimal directional aiming accuracy. Further, no differences in aiming accuracy were noted between monocular and binocular vision. These results supported the existence of a visual kinetic channel. In the 2nd experiment, whether this kinetic visual channel would operate with movements slower (55°/s) than those usually used in studies that had proved its existence (over 110°/s) was determined. The results indicated that this visual kinetic channel was operative even at relatively slow movement velocities. Central vision of the hand seemed to be used for on-line directional control of relatively slow movements.     

Therapist Self-as-Context and the Curative Relationship

This article discusses how the way the therapist relates to his or her personal responses to client material during the session contributes to making the relationship with the client an effective tool for treatment. Ideas from third wave behavior therapy are used to describe aspects of therapist involvement in the relationship and modes of therapist awareness of inner responses. In two vignettes, negative client reactions to an intervention bring problematic therapist material to the fore. Both cases highlight how the stories the therapists spun about themselves as professionals and persons could easily have limited their effectiveness in responding to the material. The vignettes also illustrate how clinicians can overcome personal meanings and judgments to access a more productive mode of interacting with the feelings a critical incident in the relationship evokes in them. It is argued that observing their own content from a psychological distance makes it possible for clinicians to use their feelings without getting caught up in them. These same feelings may then help the therapist perceive how the incident relates to the client’s daily life problems. The therapist’s engagement in a sense of self-as-context is described as a therapeutic stance that provides the psychological distance needed to help overcome alliance ruptures and other potential gridlocks and which may transform the therapist’s inner response to client content into a tool for addressing important client issues.     

Interest as a Moderator in the Relationship Between Challenge/Skills Balance and Flow at Work: An Analysis at Within-Individual Level

Considering flow as a non-ergodic process (i.e. non-homogeneous across individuals and non-stationary over time) that happens at the within-individual level, in this research we work with Bakker’s model that propose flow as made up by three components: intrinsic motivation, enjoyment, and absorption. Taking into account that flow theory can be considered as an intrinsic motivation theory, and the recent proposals about the need to distinguish between pre-conditions of flow and the flow experience itself, we look at interest as a moderator between the challenge/skills balance and the experience of flow, rather than a component of the flow experience. A total of 3640 recordings were collected from a sample of 58 workers using an experience sampling method (several registers a day, during 21 working days). The data was analyzed using regression techniques in each participant (i.e. at within-individual level). Our work tries to respond to the following two research questions: Will interest play a moderating role in the relationship between challenge/skills balance and flow? Will a non-linear model (cusp catastrophe model) better explain the relationship among challenge/skills balance, interest, and flow? The results suggest that our hypotheses were correct: including interest as moderator better explains the relationship between challenge/skills balance and flow in comparison to a model without moderation (R² values change from 0.33 to 0.50). Additionally, carrying out the analysis following non-linear techniques explained more variance as well (R² = 0.67), and this increment was significant. These results support the idea that interest should be considered as a key precondition for the appearance of flow, and this relationship is non-linear. We could say that these findings are exemplary in the field and brings up questions for their application in further research.     

Measuring voting power for dependent voters through causal models

We construct a new measure of voting power that yields reasonable measurements even if the individual votes are not cast independently. Our measure hinges on probabilities of counterfactuals, such as the probability that the outcome of a collective decision would have been yes, had a voter voted yes rather than no as she did in the real world. The probabilities of such counterfactuals are calculated on the basis of causal information, following the approach by Balke and Pearl. Opinion leaders whose votes have causal influence on other voters’ votes can have significantly more voting power under our measure. But the new measure of voting power is also sensitive to the voting rule. We show that our measure can be regarded as an average treatment effect, we provide examples in which it yields intuitively plausible results and we prove that it reduces to Banzhaf voting power in the limiting case of independent and equiprobable votes.     

The personality‐identity interplay in emerging adult women: convergent findings from complementary analyses

The present study examined whether identity development occurs in tandem with personality development in emerging adulthood. Three‐wave longitudinal data on a sample of 351 female college students were used to answer questions about stability and change, direction of effects, and interrelated developmental trajectories. Four identity dimensions (i.e. commitment making, exploration in breadth, identification with commitment, and exploration in depth) and the Big Five were assessed. Identity and personality were found to be meaningfully related at the level of both the time‐specific adjacent measures and the underlying developmental trajectories with various degrees of convergence. Cross‐lagged analyses substantiated reciprocal influences and Latent Growth Curve Modelling substantiated common developmental pathways that partially mirrored the concurrent relations. Implications and suggestions for future research are discussed. Copyright © 2006 John Wiley & Sons, Ltd.     

Comparing the Anamnestic Comparative Self-Assessment (ACSA) to a Conventional Happiness Question Without Anchoring

The Anamnestic Comparative Self-Assessment (ACSA) uses a self-anchoring rating scale to measure subjective well-being. Because of its internal frame of reference, ACSA is argued to be less influenced by cultural relativities and psychological traits. We collect survey data in Flanders that contain both a conventional happiness question (CQ) and ACSA. It is the first time that ACSA data are collected in a developed country outside of a clinical setting. In line with previous research, we find that the mean score for ACSA is significantly lower than the mean CQ score and that both scores are positively correlated. Social life (family, relationships, and friends) is cited most when self-anchoring the best period in life, whereas health issues and personal events are most often linked to the worst period in life. These findings add to the idea that the anchors of the ACSA scale are universal. In a simple model, we find that ACSA is determined by two variables that can change over time: being employed and being in a relation. In an extended model, however, ACSA’s insensitivity to socio-demographic variables that are not amenable to change no longer holds and personality traits become important.

     

Maladaptive perfectionism as an intervening variable between psychological control and adolescent depressive symptoms: a three-wave longitudinal study.

Maladaptive perfectionism has been postulated as an intervening variable between psychologically controlling parenting and adolescent internalizing problems. Although this hypothesis has been confirmed in a number of cross-sectional studies, it has not yet been examined from a longitudinal perspective. Findings from this 3-wave longitudinal study show that parental psychological control (as indexed by parent and adolescent reports) at age 15 years predicted increased levels of maladaptive perfectionism 1 year later. Maladaptive perfectionism, in turn, predicted increased levels of adolescent depressive symptoms again 1 year later and acted as a significant intervening variable between parental psychological control at Time 1 and depressive symptoms at Time 3. Multigroup analyses show that the model tested was consistent across gender for paternal psychological control but not for maternal psychological control. Suggestions for future research are outlined.     

Women’s regulation styles for eating behaviors and outcomes: The mediating role of approach and avoidance food planning

The purpose of this article was to examine the role played by different orientations in planning for eating behaviors as mediators of the relationship between regulation styles and eating behaviors. In Study 1, a new scale was developed to assess approach food planning and avoidance food planning. Results from confirmatory analyses (N = 241) supported the two-factor structure of the scale. In Study 2 (N = 202), in agreement with past research on the effects of autonomous and controlled motivation for the regulation of eating behaviors, we found that approach food planning partially mediated the effects of autonomous regulation for eating behaviors on healthy eating behaviors, while avoidance food planning partially mediated the effects of controlled regulation for eating behaviors on dysfunctional eating behaviors. Implications of these results for self-determination theory and for promoting healthy eating behaviors are discussed.

Real-time manipulation of visual displacement during manual aiming

This study examined the spatial and temporal limitations of the visual corrective process in the control of upper limb movements. Real-time calculation of kinematic data was used to trigger a prismatic displacement of the movement environment during manual aiming. Using an OptoTrak motion tracking system, a data acquisition unit, and a custom-made program, perturbations were triggered at peak acceleration, peak velocity, and the estimated time of peak deceleration. Movement outcome was significantly influenced only when the visual displacement occurred at peak acceleration. The results support models of visual control that posit that early visual information is required for accurate limb control.     

Parent-Rated Anxiety Symptoms in Children with Pervasive Developmental Disorders: Frequency and Association with Core Autism Symptoms and Cognitive Functioning

Background In addition to the core symptoms, children with Pervasive Developmental Disorders (PDD) often exhibit other problem behaviors such as aggression, hyperactivity, and anxiety, which can contribute to overall impairment and, therefore, become the focus of clinical attention. Limited data are available on the prevalence of anxiety in these children. We examined frequency and correlates of parent-rated anxiety symptoms in a large sample of children with PDD. Methods The goals of this study were to examine the frequency and correlates of parent-rated anxiety symptoms in a sample of 171 medication-free children with PDD who participated in two NIH-funded medication trials. Twenty items of the Child and Adolescent Symptom Inventory (CASI) were used to measure anxiety. Results Forty three percent of the total sample met screening cut-off criteria for at least one anxiety disorder. Higher levels of anxiety on the 20-item CASI scale were associated with higher IQ, the presence of functional language use, and with higher levels of stereotyped behaviors. In children with higher IQ, anxiety was also associated with greater impairment in social reciprocity. Conclusion Anxiety is common in PDD and warrants consideration in clinical evaluation and treatment planning. This study suggests that parent ratings could be a useful source of information about anxiety symptoms in this population. Some anxiety symptoms such as phobic and social anxiety may be closer to core symptoms of PDD. Further efforts to validate tools to ascertain anxiety are needed, as are studies to empirically test approaches to treat anxiety in PDD.