Prospective Associations Between Sleep Disturbance and Repetitive Negative Thinking: The Mediating Roles of Focusing and Shifting Attentional Control

Although considerable evidence has linked sleep disturbance to symptoms of psychopathology, including repetitive negative thinking, few studies have examined how sleep disturbance may predict repetitive negative thinking over time. Further, no study to date has examined specific mechanisms that may account for this relationship. The present study sought to address these gaps in the literature by testing focusing and shifting attentional control as two potential mediators of the relationship between sleep disturbance and repetitive negative thinking over a 6-month period. A final sample of 445 unselected community participants completed measures of sleep disturbance and repetitive negative thinking at Time 1, measures of focusing and shifting attentional control 3 months later, and measures of repetitive negative thinking again 6 months later. Results revealed that focusing, but not shifting, attentional control mediated the relationship between sleep disturbance and repetitive negative thinking, specifically, worry, rumination, and obsessions. These findings provide preliminary evidence for focusing attentional control as a candidate mechanism that may explain the causal role of sleep disturbance in the development of repetitive negative thinking observed in various disorders.     

Performance gains from directed training do not transfer to untrained tasks

Given the increasing complexity of the tasks and skills needed in modern society, developing effective training strategies is of tremendous practical importance. Furthermore, training that improves performance of both trained and untrained tasks would be highly efficient. In the present study, we examined how directed training contributes to skill acquisition, and more importantly, to engendering transfer of training to untrained tasks. Participants learned a complex video game for 30 h (Space Fortress, Donchin, Fabiani, & Sanders, 1989) using one of two training regimens: Hybrid Variable-Priority Training (HVT), with a focus on improving specific skills and managing task priority, or Full Emphasis Training (FET) in which participants simply practiced the game to obtain the highest overall score. We compared game performance, retention of training gains, and transfer of training to untrained tasks as a function of the training regimen. Compared to FET, HVT learners reached higher levels of mastery on the game and HVT was particularly beneficial for initially poor performing participants. This benefit persisted seven months after training. However, contrary to expectation, both HVT and FET were unsuccessful in producing transfer to untrained tasks compared to a group that received limited game experience, suggesting that directed training and practice can produce task-specific improvements, but improvements do not necessarily transfer from trained to untrained tasks.     

Predator-elicited foot shakes in wall lizards (Podarcis muralis): evidence for a pursuit-deterrent function

Under certain circumstances, prey may inform potential predators of their unprofitability by means of pursuit-deterrent signals. The evidence for pursuit-deterrent signaling in reptiles is scant and taxonomically biased. Wall lizards, Podarcis muralis (Squamata: Lacertidae) produce several distinct types of stereotyped foot shake displays, of which one, performed in antipredator contexts, is a likely candidate for a pursuit-deterrent function. We investigated this possibility by recording the responses of lizards in the field to a slowly approaching human acting as a surrogate predator. In addition to starting and flight initiation distances, we measured the presence of foot shakes, the leg that was shaken, and the distance from the observer at which the display was performed (display distance). Of a total of 484 approaches, 109 (22.5%) elicited foot shake displays. Roughly half the lizards displayed from the location where they were first sighted, while the other half moved a short distance, then displayed. There was no left-right preference in the leg used to display, but most lizards displayed with the leg closer to the approaching predator. Juveniles and subadults had smaller flight initiation distances than adult lizards. There were no sex-related differences in starting or flight initiation distances, but females, for a given distance, were more likely to display than males. Foot shake display frequency declined abruptly at 1 m. If lizards waited until the surrogate predator was this close, they mostly fled without displaying. Our results show that antipredator foot shaking in P. muralis is consistent with expectations from pursuit-deterrent theory.     

The Role of Maturity in the Cognitions that Govern Love Relationships and Sexual Satisfaction

This article discusses the Stage Climbing model, a cognitive behavioral therapy based system designed to identify the beliefs and attitudes typical of different developmental life stages that may explain or identify obstacles to resolving present day relationship issues. We suggest that self-defeating beliefs and behaviors characteristic of dysfunctional couples give evidence of one or both partners operating from a stage of development or level of maturity in that aspect of the relationship that is different from what would be optimal given their presenting issues and therapeutic goals.     

Solid and liquid thermal expansion and structural observations in the quasicrystalline Cd84Yb16 compound

The structure of single-grain Cd₈₄Yb₁₆ samples aligned along the twofold and fivefold axes has been followed from 300 to 1050?K using high-energy synchrotron X-rays. The quasicrystal phase is stable up to its melting temperature of 914?K and has a large linear thermal expansion of 37.1?ppm?K^?1 over this temperature range. The samples melt congruently over a temperature range of less than 1?K. The liquid is 7% less dense than the solid and, upon cooling from the melt, the quasicrystal phase directly solidifies within a 1?K interval. The amount of undercooling achieved, about 5–25?K, was dependent on the cooling rate. The total scattering function of the liquid is consistent with a dilute liquid Cd structure. These results agree with suggestions that the structure of the liquid must undergo reordering in order to form the solid phases. However, there is no compelling evidence for icosahedral short-range order in the liquid prior to the formation of the quasicrystalline structure.     

A Contribution toward the Validation of the FIRO-B Questionnaire

The FIRO-B Questionnaire is a pencil and paper test designed to measure expressed and wanted aspects of the dimensions of inclusion, control, and affection. 25 Ss took the test and also rated themselves on these dimensions. Rank order correlations were calculated between the six FIRO-B scores and the corresponding self-ratings. Five of the six resulting coefficients were significant at or beyond the .05 level. The results were discussed in terms of problems of construct validity and were viewed as contributing toward the validation of the FIRO-B.     

Reactive and Proactive Aggression: Attachment and Social Competence Predictors

In this study, 107 boys and girls aged 3 to 8 years were rated by their mothers on 6 factors: Reactive and Proactive Aggression, Secure and Insecure Attachment, and Prosocial Orientation and Social Initiative (i.e., social competence). Both secure attachment and prosocial orientation predicted proactive and reactive aggression, but prosocial orientation mediated the attachment–aggression relation in the case of reactive but not proactive aggression.     

Monitoring the effects of adult psychotherapy in routine practice in Switzerland: A feasibility trial

Background: Several studies have been published on the effects of psychotherapy in routine practice. Complementing traditional views summarised as ‘dose‐effect models’, Stiles et al. put forward data consistent with the responsive regulation model underlining the importance of the client's active participant role in defining length of treatment. One may ask what level of change reached by a patient is considered to be the ‘good enough level’ (GEL) and if it is related to the duration of psychotherapy. Aims: The main objective of the present feasibility trial was to monitor the patient's session‐by‐session evolution using a self‐report questionnaire in order to define the GEL, i.e. the number of sessions necessary for the patient to reach significant change. Method: A total of N=13 patients undergoing psychotherapy in routine practice participated in the study, completing the Outcome Questionnaire – 45.2 (OQ‐45), which assesses the symptom level, interpersonal relationships and social role after every psychotherapy session. The data was analysed using multi‐level analyses (HLMs). Results: High feasibility of fine‐grained assessment of effects of psychotherapy in routine practice in Switzerland was shown; response rates being acceptable; however, detailed analysis of the GEL was not feasible within the short study time‐frame. Conclusions: Reflections on the political context of monitoring in the specific case of routine psychiatric practice in Switzerland are discussed.     

Regional differences in brain volume predict the acquisition of skill in a complex real-time strategy videogame

Previous studies have found that differences in brain volume among older adults predict performance in laboratory tasks of executive control, memory, and motor learning. In the present study we asked whether regional differences in brain volume as assessed by the application of a voxel-based morphometry technique on high resolution MRI would also be useful in predicting the acquisition of skill in complex tasks, such as strategy-based video games. Twenty older adults were trained for over 20 h to play Rise of Nations, a complex real-time strategy game. These adults showed substantial improvements over the training period in game performance. MRI scans obtained prior to training revealed that the volume of a number of brain regions, which have been previously associated with subsets of the trained skills, predicted a substantial amount of variance in learning on the complex game. Thus, regional differences in brain volume can predict learning in complex tasks that entail the use of a variety of perceptual, cognitive and motor processes.