Conflict partners and infrastructure use in safety critical events in cycling – Results from a naturalistic cycling study

Accident statistics show that cyclists are at considerable risk of being involved in a crash. However, statistics based on police reports are often heavily biased towards on-road, bicycle–motor vehicle crashes. Crashes that do not involve motorised vehicles or that occur on other types of infrastructure are neglected. Naturalistic cycling methodology appears to be a promising approach to address these issues. The goal of this study was to identify and classify safety critical cycling events involving a variety of conflict partners and covering all types of infrastructure. Thirty-one participants in three age groups had their own bicycles equipped with a data acquisition system. Participants rode their modified bike as usual for a period of four weeks. Over 1600 trips were recorded overall. We were able to identify 77 safety critical events during the observation period. Only 43% of these events involved motorised vehicles as conflict partners. Conflicts with other cyclists and pedestrians accounted for about 57% of the situations. Likewise, less than 35% of the events occurred on-road. The data show that although motorised vehicles are still the single biggest threat to cycling safety, and roads still constitute one of the most crash prone types of infrastructure, the importance of crashes that do not involve motorised road users or occur not on-road should not be underestimated.     

THIS IS NOT B. F. SKINNER'S BEHAVIOR ANALYSIS: A REVIEW OF HAYES,STROSAHL, AND WILSON'S ACCEPTANCE AND COMMITMENT THERAPY

Acceptance and Commitment Therapy (Hayes, Strosahl, & Wilson, 1999) is an important addition to and extension of the growing field of clinical behavior analysis. The book provides a comprehensive introduction to a new therapy that is rooted in functional contextualistic philosophy and a “post-Skinnerian” behavior-analytic theory of verbal behavior. It begins with the assertion that language or verbal processes are at the heart of psychopathology and human suffering and goes on to describe a therapeutic approach that seeks to undermine these verbal processes and facilitate clients' active commitment to value-driven behavior change. Along the way, the book provides a compelling behavior-analytic account of a number of important but neglected issues in behavior analysis, including human suffering, the nature and function of private events, the self, suicide, anxiety, depression, values, responsibility, and commitment. In so doing, the book cogently challenges the unfortunately common but erroneous assertion that behaviorism does not and perhaps cannot address the complexity of the human condition. The present review provides a general overview of the book, summarizes its chapters, and raises a number of questions that might be addressed in future research.     

Bereavement,received social support,and anxiety in the elderly: A longitudinal analysis

Abstract

Determinants of anxiety and life satisfaction were examined among the elderly. Study I related the experience of stressful loss events, i.e., the death of a friend or family member, as well as received social support, to anxiety. Support buffered the effects of life events: Only those who received no support after loss were highly anxious. Study II explored determinants of anxiety and life satisfaction over a twelvemonth period. About half of the criterion variance could be explained. Perceived health turned out to be an influential predictor, whereas the role of social support remained ambiguous. The results are discussed in terms of social factors and emotions in the life of the elderly.     

Occupational stress,psychological burnout and anxiety

Abstract

For many decades, the stress process was described primarily in terms of negative emotions. However, robust evidence that positive emotions co-occurred with negative emotions during intensely stressful situations suggested the need to consider the possible roles of positive emotions in the stress process. About 10 years ago, these possibilities were incorporated into a revision of stress and coping theory (Folkman, 1997). This article summarizes the research reported during the intervening 10 years that pertains to the revised model. Evidence has accumulated regarding the co-occurrence of positive and negative emotions during stressful periods; the restorative function of positive emotions with respect to physiological, psychological, and social coping resources; and the kinds of coping processes that generate positive emotions including benefit finding and reminding, adaptive goal processes, reordering priorities, and infusing ordinary events with positive meaning. Overall, the evidence supports the propositions set forth in the revised model. Contrary to earlier tendencies to dismiss positive emotions, the evidence indicates they have important functions in the stress process and are related to coping processes that are distinct from those that regulate distress. Including positive emotions in future studies will help address an imbalance between research and clinical practice due to decades of nearly exclusive concern with the negative emotions.     

Negative life events and symptoms of depression and anxiety: stress causation and/or stress generation

Background and Objectives: Stressful life events are known to contribute to development of depression; however, it is possible this link is bidirectional. The present study examined whether such stress generation effects are greater than the effects of stressful life events on depression, and whether stress generation is also evident with anxiety. Design: Participants were two large age cohorts (N = 732 aged 44 years; N = 705 aged 63 years) from the West of Scotland Twenty-07 study. Methods: Stressful life events, depression, and anxiety symptoms were measured twice five years apart. Cross-lagged panel analysis examined the mutual influences of stressful life events on depression and on anxiety over time. Results: Life events predicted later depressive symptomatology (p = .01), but the depression predicting life events relationship was less strong (p = .06), whereas earlier anxiety predicted life events five years later (p = .001). There was evidence of sex differences in the extent to which life events predicted later anxiety. Conclusions: This study provides evidence of stress causation for depression and weaker evidence for stress generation. In contrast, there was strong evidence of stress generation for anxiety but weaker evidence for stress causation, and that differed for men and women.     

Perception of randomness and predicting uncertain events

Using randomly generated sequences of binary events we asked participants to make predictions about the next event. It turned out that while predicting uncertain events, people do not behave unsystematically. Our research identifies four types of relatively consistent strategies for predicting uncertain binary events: a strategy immune to short-run sequential dependencies consisting of the persistent prediction of long-run majority events, hereafter called the long-run momentum strategy; a strategy immune to short-run sequential dependencies consisting of the persistent prediction of long-run minority events, called the long-run contrarian strategy; a strategy sensitive to short-run sequential dependencies consisting of the prediction of short-run majority events, called the short-run momentum strategy; and a strategy sensitive to short-run sequential dependencies consisting of the prediction of short-run minority events, called the short-run contrarian strategy. When the character of events remains unknown, the most common strategy is the short-run momentum strategy. With the increase of a perceived randomness of the situation, people tend more often to use the short-run contrarian strategy. People differ in their general beliefs about the continuation or reversal of a trend in various natural and social processes. Trend believers, when facing sequences of binary events commonly perceived as random, tend to use momentum strategies, whereas those who believe in the trend's reversal tend to use contrarian strategies.     

An Application of the Rorschach INK Blot Test to Three Clinical Types of Dementia Praecox

At the beginning of an introductory course in psychology, 227 students were asked to define ordinary everyday English words and to guess the technical psychological concepts represented. In the final examination for the course, questions were inserted that required the students to understand the concepts and to know the terminology. From a comparison of responses at the beginning and end of the term it seems that negative transfer was not involved or, if present, was well overcome.     

Personality Change in Middle Adulthood: With Focus on Differential Susceptibility

Abstract

Little attention has been paid to middle adulthood in research on personality stability and change. In addition, previous research on individual differences in personality change has not fully explained its variability. This study focused on the differential susceptibility model, which suggests that individual susceptibility interacts with environmental factors and produces variability in outcomes, and investigated individual differences in personality change with a middle adult sample. A total of 1051 Japanese middle adults (M?=?41.61?years; SD = 5.31; range 30–50?years; 534 females) participated in this two-wave short-term longitudinal study. Latent change score model analyses revealed substantial mean-level declines in Agreeableness and Honesty–Humility. Moreover, the results showed that the influences of some life events on personality change are moderated for better and for worse by individual susceptibility to one’s environment. These findings suggest that the trends of personality development may differ between Western and non-Western countries and that differential susceptibility model may play an important role in deriving individual differences in personality stability and change.     

Averaging and summation: Positivity and choice as a function of the number and affective intensity of life events

Six experiments were reported that investigated individuals’ perceptions of positive life events and their preferences for options presenting different combinations of positive event frequency and magnitude. Results revealed that individuals often responded to the average level of positivity and preferred less (versus more) positive events and supported the averaging/summation model of life event integration. Results revealed, for example, that participants felt more positive affect when they were exposed to a highly positive event than a highly positive plus mildly positive one. When the events had similar affective intensities, however, summation effects were obtained—more was better. In demonstrating averaging and summation effects, we delineated situations in which more positive life events can be better (summation effects) and situations in which more can be worse (averaging effects). Results also ruled out several alternative accounts, including the peak-end rule, economic, affective forecasting, and an assimilation/contrast interpretation.     

Stress Generation in Adolescent Depression: The Moderating Role of Child Abuse and Neglect

The present study examined the role of childhood abuse and neglect and depression recurrence in moderating the generation of stressful life events in adolescent depression. Maltreatment history and stressful life events were assessed using two rigorous contextual interviews and rating systems. In a sample of 59 community depressed adolescents we found significantly higher rates of interpersonal events in the 3-month period immediately following depression episode onset versus the 3-month period immediately preceding onset in adolescents with a history of childhood maltreatment. By contrast, rates of events remained constant over a matched period in a control group of non-maltreated adolescents. Furthermore, the generation of interpersonal events only held among those on a first onset of depression. These results suggest that a history of childhood abuse and neglect exacerbates the psychosocial dysfunction associated with the onset of depression, particularly in the very first episode.