The safety performance of connected vehicles on slippery horizontal curves through enhancing truck drivers’ situational awareness: A driving simulator experiment

Although drivers can adequately adjust their operating speed according to the road curvature, they show a lack of recognition regarding the pavement friction conditions. In this regard, inappropriate speed selection on Horizontal Curves (HCs) with reduced surface friction can lead to a remarkable rate of run-off-road, sideswipe, head-on, and rollover crashes, especially on rural highways. Aligned with the Connected Vehicle (CV) Pilot Program on Interstate-80 in Wyoming, this study scrutinizes how CV advisory/warning messages can enhance traffic safety on slippery HCs. To this aim, a roadway consists of two HCs with regular and slippery pavement conditions was designed in a high-fidelity driving simulator experiment. A total of 24 professional truck drivers were recruited to drive the simulated roadway under CV and non-CV environments. In the CV scenario, drivers were informed about the pavement conditions and the advisory speeds before entering HCs. In contrast, no messages were given to non-CV drivers. Truck drivers' behaviors in both scenarios were quantified using four Kinematic-based Surrogate Measures of Safety (K-SMoS), including deviation from the pathway, instantaneous acceleration, lateral speed, and steering angle. CVs’ trajectories were statistically compared to non-CVs in terms of the central tendency and dispersion using the Wilcoxon Signed-Rank Test (WSRT) and Median Absolute Deviation (MAD), respectively. The results of WSRT depicted, under the effect of CV advisory/warning messages and throughout the slippery HC, the central tendency of four K-SMoS could be shifted toward zero by 23% up to 99%. This shifting is associated with a significant safety enhancement that potentially can reduce the likelihood of curve-related crashes on slippery HCs. It was revealed that the variation in drivers’ behavior on the slippery HC could be minimized in the CV environment, where 54% up to 95% reduction in the dispersions of four K-SMoS were observed, leading to more certainty in drivers’ behavior.     

Interpretation and method

Abstract

Interpretation started as the central tool of psychoanalytic theory, but it has undergone changes, just as the theory it was based on has evolved. Not only have these significant changes been determined by cultural trends, but different authors have also contributed to their evolution through their approaches to various other pathologies besides neurosis. Today, the cure process is divided between those who believe that therapeutic efficiency should be based on the different interpretation models, and those who maintain that it can be only sustained by the modifying capacity of the therapeutic relationship. Both positions are supposedly upheld by the results of tests that both models believe are sufficient proof but that, in the current author's opinion, lead back to the type of pathology they arose from, although they may at times attempt to cover the entire theoretical spectrum. The position upheld by Gedo—who considers that the psychoanalyst's intervention will depend on the degree of evolution that the pathology has achieved—is of great interest for specific practice. Hence, the more primitive levels require a treatment founded on holding, whereas more evolved pathologies require a more classic level of interpretation. This implies that the stages of a particular patient's evolution may require interventions at different levels, even though these may be founded on different theoretical models. This model, which we may brand as eclectic, is basically the one we find underpinning different theoretical models, which effectively appear to integrate others.     

A process study of long-term treatment: comparing a successful and a less successful outcome

This study examined therapist technique and patient change in emotional experiencing and defense mechanisms in the successful and unsuccessful long-term psychoanalytic treatments of two male patients. Two consecutive sessions every 6 months were analyzed for each patient. Therapist interventions, patient defense mechanisms, and patient emotional experiencing were assessed using the Psychodynamic Intervention Rating Scale, Defense Mechanism Rating Scale and the Experiencing Scale, respectively. Between and within-session analyses were conducted to determine the impact of the patient’s defensive functioning and experiencing on therapist interventions, and the effect of therapist interventions on those same two patient variables. Pearson’s Coefficient was utilized for between-session analysis; within-session analysis tracking moment-to-moment changes in patient and therapist functioning was performed using lag sequential analysis. Across therapy, therapist use of Interpretive Interventions was associated with increased emotional engagement and decreased defense maturity; the use of Supportive Interventions had the opposite effect. Within-session analysis revealed that use of Supportive Interventions when emotional engagement is low, followed by interpretative interventions, occurred in the successful case. Persistent use of Supportive Interventions in the context of low emotional engagement was observed in the unsuccessful case. This study suggests that failure to stimulate emotional engagement through interpretation can negatively affect therapeutic outcome.     

Differential brain shrinkage over 6 months shows limited association with cognitive practice

The brain shrinks with age, but the timing of this process and the extent of its malleability are unclear. We measured changes in regional brain volumes in younger (age 20–31) and older (age 65–80) adults twice over a 6 months period, and examined the association between changes in volume, history of hypertension, and cognitive training. Between two MRI scans, 49 participants underwent intensive practice in three cognitive domains for 100 consecutive days, whereas 23 control group members performed no laboratory cognitive tasks. Regional volumes of seven brain structures were measured manually and adjusted for intracranial volume. We observed significant mean shrinkage in the lateral prefrontal cortex, the hippocampus, the caudate nucleus, and the cerebellum, but no reliable mean change of the prefrontal white matter, orbital-frontal cortex, and the primary visual cortex. Individual differences in change were reliable in all regions. History of hypertension was associated with greater cerebellar shrinkage. The cerebellum was the only region in which significantly reduced shrinkage was apparent in the experimental group after completion of cognitive training. Thus, in healthy adults, differential brain shrinkage can be observed in a narrow time window, vascular risk may aggravate it, and intensive cognitive activity may have a limited effect on it.     

Emerging Trauma Therapies: Critical Analysis and Discussion of Three Novel Approaches

Trauma-related disorders and treatment have gained increasing attention in the last 3 decades, spurring the development of novel treatment approaches. Many of these are incorporated into clinical practice despite lacking a solid evidence base or unbiased analyses to facilitate interpretation of existing information. Although treatments might draw on elements from validated therapies, questions regarding the incremental efficacy of new approaches persist. Three novel therapies that might warrant further examination include energy psychology, yoga, and brainspotting. The emergence of novel, trauma-related therapies is examined, and the history, theory, practice, and evidence base of these 3 specific therapies are outlined. Directions for future work are discussed. Expositions such as this might serve as a helpful resource for clinicians seeking discernment regarding treatment for posttraumatic stress disorder.     

Guided Visualization and Suggestibility: Effect of Perceived Authority on Recall of Autobiographical Memories

The purpose of this study was to investigate a possible component process in the formation of childhood pseudomemories in adults. Participants recounted a childhood event, the details of which came from hearing others tell it (a know event) rather than from their personal experience (a remember event). Then participants were placed in 1 of 4 possible conditions: They completed a guided visualization task led by an expert, a guided visualization task led by a nonexpert, a visual search task, or a verbal list-learning task. For the guided visualization task, participants listened to a middle-aged man on audiotape, who asked them to imagine details about their know event. Half believed the person on the tape was a well-known and esteemed psychologist (an expert), and half were led to believe that he was someone who had gone back to school to study communications (a nonexpert). As predicted, guided visualization led participants to rate their know event closer to a remember event. Planned comparisons demonstrated that the effect was significantly greater for the expert versus nonexpert conditions. Results were applied to the process of false memory formation and the use of visualization procedures in psychotherapy.     

Correction of a Technical Error in the Golf Swing: Error Amplification Versus Direct Instruction

Performance errors drive motor learning for many tasks. The authors' aim was to determine which of two strategies, method of amplification of error (MAE) or direct instruction (DI), would be more beneficial for error correction during a full golfing swing with a driver. Thirty-four golfers were randomly assigned to one of three training conditions (MAE, DI, and control). Participants were tested in a practice session in which each golfer performed 7 pretraining trials, 6 training-intervention trials, and 7 posttraining trials; and a retention test after 1 week. An optoeletronic motion capture system was used to measure the kinematic parameters of each golfer's performance. Results showed that MAE is an effective strategy for correcting the technical errors leading to a rapid improvement in performance. These findings could have practical implications for sport psychology and physical education because, while practice is obviously necessary for improving learning, the efficacy of the learning process is essential in enhancing learners' motivation and sport enjoyment.     

Child psychotherapy then and now

The following is the text of an introductory presentation given on the occasion of the 40th Birthday Conference of the Journal of Child Psychotherapy. It provides an historical overview of the Journal's development, and in particular compares and contrasts the first two issues of the Journal with the two most recent. The importance of research is emphasised.