Can imaginal exposure reduce intrusive memories in depression? A case study

The presence of intrusive memories as an overlapping feature of depression and posttraumatic stress disorder (PTSD) raises the possibility that common therapeutic approaches may be effective. Imaginal exposure (IE) is the gold-standard treatment for PTSD and directly reduces both PTSD and depression symptoms in traumatized individuals. The objective of this pilot study was to use a single-case design to trial the use of IE to target intrusive memories of a negative life event as a treatment for major depression. The participant was experiencing depression after a relationship breakup. Pre-posttreatment measures (clinical interview and self-report) showed a decrease in frequency of intrusive memories and improved mood, such that the participant no longer met diagnostic criteria for major depression at posttreatment or at 6-month follow-up. This case is an important first step in demonstrating the possible value of IE as an inclusion in therapy to reduce intrusive memories in patients whose depressive episode is precipitated by a stressor. Further application of IE to additional depressed clients in the context of a case series is needed to provide preliminary evidence of its efficacy as a treatment for depressive disorders.     

Can infants be "taught" to attend to a new physical variable in an event category? The case of height in covering events

As they observe or produce events, infants identify variables that help them predict outcomes in each category of events. How do infants identify a new variable? An explanation-based learning (EBL) account suggests three essential steps: (1) observing contrastive outcomes relevant to the variable; (2) discovering the conditions associated with these outcomes; and (3) generating an explanation for the condition-outcome regularity discovered. In Experiments 1-3, 9-month-old infants watched events designed to "teach" them the variable height in covering events. After watching these events, designed in accord with the EBL account, the infants detected a height violation in a covering event, three months earlier than they ordinarily would have. In Experiments 4-6, the "teaching" events were modified to remove one of the EBL steps, and the infants no longer detected the height violation. The present findings thus support the EBL account and help specify the processes by which infants acquire their physical knowledge.     

Segregation in the classroom: What does it take to be accepted as a friend?

Research on students’ social relationships shows their preference to associate with similar peers. This study focused on the similarity in selection criteria used by students to form groups and similarity of characteristics of existing groups in schools. It compared these criteria to those of isolated students. The sample consisted of 124 students aged 14–15. The results revealed that the assessment of peers’ social skills was a relevant selection criterion, and that global self-esteem, well-being, and, physical activity were important variables in describing groups. The selection criteria and group characteristics of isolated students did not match those of the groups. The isolated students have more outspoken views on criteria and characteristics compared to the groups’ points of view.     

What is the best way to promote cycling? A systematic review and meta-analysis

Cycling has the potential to address a number of personal and societal challenges, not least with respect to health and the need for more sustainable modes of transport. However, the best way(s) to promote cycling is still unclear. In an effort to answer this question, we identified 39 interventions designed to promote cycling, with a total sample of 46,102 participants. Random effects meta-analysis estimated a small but statistically significant effect of interventions on cycling behaviour (g₊ = 0.14, 95% CI [0.05, 0.23]). To identify the most effective intervention strategies, we coded the behaviour change techniques used within each of the interventions. Interventions that prompted people to self-monitor their behaviour or added objects to the environment (e.g., provided shared bikes) were more effective than those that did not use these strategies. Interventions that restructured the physical environment (e.g., built new cycle paths) were less effective than the studies that did not do this. We also identified a number of factors that moderated the effect of the interventions on outcomes; specifically, interventions that targeted a specific group, used objective measures of cycling such as accelerometers, and that were tested using independent groups designs typically yielded stronger effects. The findings should help to guide interventions to promote cycling in the future.     

Who is called to be a bishop? A study in psychological type profiling of bishops in the Church of England

A sample of 168 bishops, serving or retired, in the Church of England completed the Francis Psychological Type Scales. The psychological type profile of these bishops was compared with that of 626 Anglican clergymen. The bishops differed significantly from the clergymen on three of the four aspects of psychological type. The bishops were more likely to prefer extraversion (53% compared with 43%), more likely to prefer sensing (49% compared with 38%), and more likely to prefer judging (88% compared with 68%). Overall the SJ temperament was preferred by 47% of the bishops compared with 31% of the clergymen. Moreover, there was a significant difference between diocesan bishops and suffragan bishops in terms of the judging process. While 37% of the suffragan bishops preferred thinking, the proportion rose to 56% among the diocesan bishops. These findings are discussed in light of the Anglican ordinal and in light of the strengths brought to ministry by different psychological types.     

Can smartphones be used to bring computer-based tasks from the lab to the field? A mobile experience-sampling method study about the pace of life

Researchers are increasingly using smartphones to collect scientific data. To date, most smartphone studies have collected questionnaire data or data from the built-in sensors. So far, few studies have analyzed whether smartphones can also be used to conduct computer-based tasks (CBTs). Using a mobile experience-sampling method study and a computer-based tapping task as examples (N = 246; twice a day for three weeks, 6,000+ measurements), we analyzed how well smartphones can be used to conduct a CBT. We assessed methodological aspects such as potential technologically induced problems, dropout, task noncompliance, and the accuracy of millisecond measurements. Overall, we found few problems: Dropout rate was low, and the time measurements were very accurate. Nevertheless, particularly at the beginning of the study, some participants did not comply with the task instructions, probably because they did not read the instructions before beginning the task. To summarize, the results suggest that smartphones can be used to transfer CBTs from the lab to the field, and that real-world variations across device manufacturers, OS types, and CPU load conditions did not substantially distort the results.     

Habit as moderator of the intention–physical activity relationship in older adults: a longitudinal study

This longitudinal study examined whether habit strength moderates the intention–physical activity (PA) relationship in older adults, within the framework of the attitude–social influences–efficacy (ASE) model and the theory of planned behaviour (TPB). A total of 1836 older adults (M _age?=?62.95?years, SD _age?=?8.17) completed a questionnaire on social cognitive constructs and PA habit strength at baseline, and six?months later a measure of PA. Three PA habit groups (i.e. low, medium and high) were composed, based on tertiles of the mean index score. Multi-group structural equation modelling analyses showed that intention significantly determined PA behaviour only in participants with a low or medium habit strength towards PA. This result suggests that PA is not intentional at high levels of habit strength and demonstrates the usefulness of incorporating habit in the ASE and TPB models. Results also showed that about half of the participants with a strong PA habit did not meet the recommended PA level. As strong habits may prevent intentional behavioural change and may hinder the receptiveness and openness for informational PA change strategies, additional intervention strategies, such as awareness raising and the use of implementation intentions, are needed for strongly habitual, but insufficiently active older adults.     

Testing the effects of an expectancy-based intervention among adolescents: Can placebos be used to enhance physical health?

It has been suggested that the well-known health benefits associated with exercise can be explained by a placebo effect, and that greater effort should be given to convince people that their current behaviors have desirable health consequences. The overall purpose of this study was to test the efficacy of this "mind-set matters" hypothesis through the use of an expectancy-based intervention with adolescents. The study involved a four week randomized controlled trial with 348 Grade 9 adolescents (M (age)?=?14.07 yrs, SD?=?0.30), from four high schools, taking part in either a placebo-intervention condition (n?=?188) or a control condition (n?=?160). Participants in the placebo-intervention condition were informed that what they are already doing in school physical education lessons fulfills current recommendations for an active lifestyle. Participants in the control condition were not given this information. Four weeks after the intervention, adolescents in the placebo-intervention condition did not demonstrate significant changes in physiological health-related measures (diet, weight, body mass index, percentage body fat, heart rate, mean arterial pressure). The findings question the external validity of the "mind-set matters" hypothesis with adolescents, and suggest that simply encouraging adolescents to believe that they are healthy may not enable them to respond with improved indicators of physical health.     

How quickly do children forget events? A systematic study of children's event reports as a function of delay

Sixty‐six children aged between 5 and 7 years participated in the event, ‘Visiting the Pirate’, and were interviewed about it at one of five delays, namely, no delay (immediate interview), or at a 1‐week, 1‐day, 1‐month or 6‐month delay. For open‐ended recall, a significant decrease in the amount of information reported was detected only at the 6‐month delay, although forgetting functions indicated forgetting was most rapid at the shorter delays. Accuracy of open‐ended recall was maintained over all delays. In contrast, in response to specific, leading and misleading questions, accuracy had decreased significantly by the 6‐month delay. The theoretical and practical implications of these findings regarding the effects of delays on children's event reports are discussed. Copyright © 2002 John Wiley & Sons, Ltd.     

Does frontal brain activity mediate the effect of depression prevention in adolescents? A pilot study

We investigated whether (a) depression prevention was associated with depressive symptoms and medial-frontal alpha asymmetry in adolescents; (b) alpha asymmetry mediated the association between participation in a prevention program and depressive symptoms; and (c) gender affects these associations. In our randomised control group study, we compared a universal prevention program (n = 40 adolescents, 14 females) with a non-intervention control condition (n = 39 adolescents, 20 females) in German secondary school students (mean age: 13.53 years, SD = 0.53). We collected data at baseline, post-intervention, 6-month, and 12-month follow-up using the Self-Rating Questionnaire for Depressive Disorders (SBB-DES) and resting medial-frontal alpha activity on F3 and F4. We found that girls benefitted from participating in the prevention program in regards to their depressive symptoms at 12-month follow-up but not alpha asymmetry. In boys, participation in the prevention program was associated with their alpha asymmetry at 6-month follow-up but not their depressive symptoms. Alpha asymmetry did not mediate the effects of the prevention program on depressive symptoms in either gender. Although participation in the prevention program was associated with both depressive symptoms and alpha asymmetry, those associations seem independent from each other. Possible explanations for this result pattern are discussed.     

Can blindness to response-compatible stimuli be observed in the absence of a response?

Blindness to response-compatible stimuli is the finding that targets are identified less accurately when presented during the planning or execution of a congruent response (e.g., right arrow presented during a right keypress) versus an incongruent response (e.g., right arrow presented during a left keypress). Accounts of this effect suggest the planning and execution of a response are critical to its observation. Five experiments investigated whether a blindness effect would be observed in the absence of a planned response. Results suggest that a planned response is not necessary to observe a content-specific blindness effect and that the blindness effect may actually comprise both an action-related component and a symbolic component that is distinct from the action-planning system.     

What is it Like to be a Butterfly? A Philosophical Interpretation of Zhuangzi's Butterfly Dream

This paper attempts to recast Zhuangzi's Butterfly Dream within the larger normative context of the ‘Inner Chapters’ and early Daoism in terms of its moral significance, particularly in the way that it prescribes how a Daoist should live through the ‘significant symbol’ of the butterfly. This normative reading of the passage will be contrasted with two recent interpretations of the passage—one by Robert Allinson and the other by Harold Roth—that tend to focus more on the epistemological and mystical concerns of the text. As will be argued, the undue emphasis on the epistemological and mystical significance of the passage not only comes to grief when considered in light of philosophical and textual concerns but also obscures the moral dimensions of the passage that are more congruent with the ‘Inner Chapters’ as a whole.     

‘What do you mean by depression?’—A study of the relationship between antidepressive activity and personal concepts of depression

This study explores the relationship between a subject's concept of depression and his reported antidepressive activities. A pilot study is reported which was used to develop a method of classification of subjects' concepts of depression in terms of depth of depression and degree of external causality perceived. The majority of the subjects studied fitted into a group who see depression as a major disturbance of mood unrelated to external events; this was true for both the pilot and main studies. The main study applied the depressive classification method to an investigation of the relationship between depressive concept group and qualitative and quantitative aspects of reported repertoires for coping with depression. A major concept of depression was shown to be associated with a high frequency of reported antidepressive activity, but ANOVAR revealed no other significant main effect on quantitative analysis. Various complex interactions of sex. depth of concept and locus of concept were observed. A group of psychiatric inpatients were seen to differ in quantitative and qualitative aspects of reported antidepressive behaviour from the remainder of the population studied; the implications of these findings for further research are discussed.     

What is the moral basis of the authority of family members to act as surrogates for incompetent patients?

...The authority of family members should be understood as presumptive; that is, there is a moral presumption that a close family member should serve as surrogate for an incompetent patient. That presumption can be overcome or rebutted in a particular case, either when there is sufficient evidence that the usual reasons supporting this presumption do not hold or when the surrogate's decision exceeds appropriate limits of surrogates' decision-making discretion. In order to clarify these hard cases and appropriate public policy, we need a much deeper and more complex analysis than either the conventional view, or the alternative account that Pearlman and colleagues provide. I have sought here only to point toward some of the other grounds that a full account of family members' authority as surrogates would have to develop and explore in much more detail....     

Does learning a complex task have to be complex? A study in learning decomposition

Many theories of skill acquisition have had considerable success in addressing the fine details of learning in relatively simple tasks, but can they scale up to complex tasks that are more typical of human learning in the real world? Some theories argue for scalability by making the implicit assumption that complex tasks consist of many smaller parts, which are learned according to basic learning principles. Surprisingly, there has been rather sparse empirical testing of this crucial assumption. In this article, we examine this assumption directly by decomposing the learning in the Kanfer-Ackerman Air-Traffic Controller Task (Ackerman, 1988) from the learning at the global level all the way down to the learning at the keystroke level. First, we reanalyze the data from Ackerman (1988) and show that the learning in this complex task does indeed reflect the learning of smaller parts at the keystroke level. Second, in a follow-up eye-tracking experiment, we show that a large portion of the learning at the keystroke level reflects the learning even at a lower, i.e., attentional level.     

What is an extinction burst?: A case study in the analysis of transitional behavior

Among the tactics of experimental science discussed by Sidman (1960) were those used to study transitional behavior. Drawing from his insights, this review considers an often cited but infrequently analyzed aspect of the transition from reinforcement to extinction: the extinction burst. In particular, the review seeks to answer the question posed in its title. The generic definition of an extinction burst as an increase in response rate following the onset of extinction is found to be wanting, raising more questions than it answers. Because questions of definition in science usually come down to those of measurement, the answer to the title's question is suggested to be found in how behavior prior to extinction is maintained and measured, when and how extinction is introduced, and where in time and how behavior early in extinction is measured. This analysis suggests that a single, uniform, and precise definition of the extinction burst is misguided. Examining how each of these facets contributes to what has been described generically as the extinction burst is a small, but important, part of Sidman's methodological legacy to the experimental analysis of behavior.