Medium-sized Effects Research Articles

Evaluation of a basic educational program for patients with rheumatoid arthritis

HintergrundEin neues Rahmenkonzept hat die flexible Ableitung und Nutzung von rheumatologischen Schulungsprogrammen für unterschiedliche Versorgungsbereiche ermöglicht. Auf dieser Grundlage wurde eine 5‑stündige Basisschulung für Patienten mit rheumatoider Arthritis (RA) entwickelt, es wurden rheumatologische Fachärzte und Psychologen trainiert, und dann wurde die Wirksamkeit nach dem Wirkmodell der Patientenschulung evaluiert.MethodenMit dem Studiendesign einer extern randomisierten Wartekontrollgruppenstudie mit 3 Messzeitpunkten wurde geprüft, wie sich die 5‑stündige Basisschulung auf das Erkrankungs- und Behandlungswissen sowie auf die Gesundheitskompetenz von RA-Patienten (n = 249) auswirkt. Weitere Fragen betrafen Einstellungsparameter, Kommunikationskompetenz, Erkrankungsauswirkungen und die Zufriedenheit mit der Schulung. Die Auswertungen erfolgten auf Intention-to-treat-Basis mit Kovarianzanalysen für die Hauptzielgrößen unter Berücksichtigung des Ausgangswertes.ErgebnisseDie Analysen zeigen, dass die Basisschulung RA wirksam ist. Noch 3 Monate nach der Schulung verfügten die Schulungsteilnehmer über mehr Wissen und Gesundheitskompetenz als die Wartekontrollgruppe mit kleinem bis mittelgroßem Effekt (d = 0,37 bzw. 0,38). In den Nebenzielgrößen zeigten sich mit Ausnahme der Krankheitskommunikation keine weiteren Schulungseffekte.DiskussionDie Basisschulung bietet eine gute Grundlage, auf der weitere Interventionen zur Verbesserung von Einstellungs- und Erkrankungsparametern aufbauen können. Sie eignet sich damit als zentraler Baustein für die rheumatologische Versorgung auf verschiedenen Ebenen.Zusatzmaterial onlineDie Online-Version dieses Beitrags (10.1007/s00393-020-00769-4) enthält weitere Tabellen. Beitrag und Zusatzmaterial stehen Ihnen auf www.springermedizin.de zur Verfügung. Bitte geben Sie dort den Beitragstitel in die Suche ein, das Zusatzmaterial finden Sie beim Beitrag unter „Ergänzende Inhalte“.

The effects of a brief mindfulness intervention on basketball free-throw shooting performance under pressure

Brief mindfulness training can improve cognitive performance under pressure; however, no studies have examined the effects of mindfulness on athletic performance under pressure. Participants in the current study were 32 young-adult, male basketball players who shot free-throws in a low-pressure phase, then were pair-matched and randomly assigned to mindfulness (n = 16) or control (n = 16) conditions. Participants listened to a 15 min mindfulness or history recording before pressure was induced. Then, free-throws made and shot quality was recorded for 20 free-throws. A mixed ANOVA revealed that during the high-pressure phase, the mindfulness groups’ shooting average (M = 70.7%) was not statistically different from the control’s (M = 61.6%), nor was shot quality rating different between the mindfulness group (M = 73.44) and controls (M = 67.38). A chi-square indicated no statistically significant relationship between group assignment and number of free-throws made on the first attempt under pressure (mindfulness = 12, control = 7), though there was a medium effect size (χ 2 = 3.24, p = .07, φ = .32). During the pressure phase, mindfulness participants reported lower cognitive anxiety with a medium effect size (p = .048, d = .73) and lower somatic anxiety, with a large effect size, (p = .014, d = .94) than controls. Although the intervention did not have a statistically significant effect on performance, findings are discussed in terms of practical significance. Additionally, the treatment group’s lower anxiety indicates that brief mindfulness training influences athletes’ mental states under pressure. Lay Summary: A brief mindfulness training did not statistically improve free-throw percentage under pressure compared to controls; however, there were medium-sized effects in group differences in performance on the first free-throw under pressure. Mindfulness participants also reported lower anxiety than controls, suggesting that a brief mindfulness training influences mental states prior to athletic performance. Implications for Practice A 15 min mindfulness intervention appears to have some effects on participants’ first basketball free-throw shot and state anxiety when performing under pressure, though more research is needed before a clear recommendation can be made about the intervention.

Towards a Comprehensive and Potentially Cross-Cultural Model of Why People Engage in Collective Action: A Quantitative Research Synthesis of Four Motivations and Structural Constraints

Sociopsychological theorizing and research on collective action (e.g., social protests) has mushroomed over the last decade, studying a wide variety of groups, contexts, and cultures. Through a quantitative research synthesis of four motivations for collective action (1,235 effects from 403 samples; total N = 123,707), we summarize and synthesize this body of research into the dual chamber model, a comprehensive and potentially cross-cultural model of collective action. We aim to replicate previous meta-analytic conclusions (about identity, injustice, and efficacy) and break new theoretical ground by (a) integrating a fourth motivation (morality) into the very heart of the psychology of collective action, (b) extending these four motivations to advantaged group members acting in solidarity with the disadvantaged, and (c) integrating theoretically relevant structural (i.e., cultural and other contextual) constraints. Results substantiated the dual chamber model as all four motivations yielded unique, positive, medium-sized effects and interrelationships were positive (particularly among morality and identity, conceptualized as the dual chambers of the protester's beating heart). Meta-analytic structural equation modeling supported the added value of including morality. Moreover, findings confirmed that the strongest specific motivations were emotional injustice and politicized identification, while newly adding moral conviction to that list. Finally, the four motivations extended to advantaged group members acting in solidarity with the disadvantaged, while only the identity motivation was constrained by theoretically relevant cultural dimensions and values (e.g., collectivism and hierarchy). We discuss the implications and limitations of the dual chamber model for integrative theorizing, innovative research, and the practice of collective action. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

D-cycloserine as adjunct to brief computerised CBT for spider fear: Effects on fear, behaviour, and cognitive biases

Background and objectivesIn anxiety disorders, cognitive behavioural therapy (CBT) improves information-processing biases such as implicit fear evaluations and avoidance tendencies, which predicts treatment response. Thus, these cognitive biases might constitute important treatment targets. This study investigated (i) whether information-processing biases could be changed following single-session computerised CBT for spider fear, and (ii) whether this effect could be augmented by administration of D-cycloserine (DCS). MethodsSpider-fearful individuals were randomized to receiving either 250 mg of DCS (n = 21) or placebo (n = 17). Three hours after drug administration, they received single-session computerized CBT, characterized by psychoeducation and exposure elements. Spider fear was assessed using self-report, behavioural, and information processing (Extrinsic Affective Simon Task & Approach Avoidance Task) measures at baseline (before drug administration), post-treatment, 1-day, and 1-month follow-up. ResultsLinear mixed-effects analyses indicated significant improvements on self-report and behavioural spider fear indices following CBT, but not on cognitive bias measures. There was no evidence of an augmentation effect of DCS on any outcome. Cognitive bias measures at 1-day were not predictive of 1-month follow-up spider fear in adjusted linear regression analyses. LimitationsResults might be biased by limited representativeness of the sample (high education and intelligence, largely Caucasian ethnicity, young age). The study was also only powered for detection of medium-sized DCS effects. ConclusionsThese findings do not provide evidence for information-processing biases relating to treatment outcome following computerised CBT for spider fear or augmentation with DCS.

A systematic review and meta-analysis of couple-based intervention on sexuality and the quality of life of cancer patients and their partners.

To synthesize the characteristics and effects of couple-based intervention on sexuality and the quality of life (QOL) of cancer patients and their intimate partners and its implications for future research and practice. A systematic review and meta-analysis of randomized and non-randomized controlled studies of interventions was conducted in nine English databases and two Chinese databases, with identification of related studies published in English and Chinese. The quality of the studies was assessed using the tools of the Effective Public Health Practice Project. A total of 33 articles were identified for systematic review and 23 articles were identified for meta-analysis. For patients, the effect size was 0.42 (Hedges's g, 95% CI = 0.05-0.78, p = 0.03) for physical health. For partners, the effect size was 0.52 (Hedges's g, 95% CI = 0.06-0.98, p = 0.03) for sexual relationships. However, moderate to high heterogeneity was reported. Effects on sexual function, sexual self-concept, and mental health for couples were not significant. Couple-based interventions had small to medium-sized effects on physical health for cancer patients. Partners could derive medium effects for improvement in sexual relationships from couple-based intervention. Future research should pay more attention to sexual self-concept in cancer patients and target types of cancer that are more likely to compromise sexuality and QOL. The systematic review and meta-analysis has been registered in PROSPERO with registration number: CRD42019119047.

Cluster failure or power failure? Evaluating sensitivity in cluster-level inference

Pioneering work in human neuroscience has relied on the ability to map brain function using task-based fMRI, but the empirical validity of these inferential methods is still being characterized. A recent landmark study by Eklund and colleagues showed that popular multiple comparison corrections based on cluster extent suffer from unexpectedly low specificity (i.e., high false positive rate). Yet that study’s focus on specificity, while important, is incomplete. The validity of a method depends also on its sensitivity (i.e., true positive rate or power), yet the sensitivity of cluster correction remains poorly understood. Here, we assessed the sensitivity of gold-standard nonparametric cluster correction by resampling real data from five tasks in the Human Connectome Project and comparing results with those from the full “ground truth” datasets (n ​= ​480–493). Critically, we found that sensitivity after correction is lower than may be practical for many fMRI applications. In particular, sensitivity to medium-sized effects (|Cohen’s d| ​= ​0.5) was less than 20% across tasks on average, about three times smaller than without any correction. Furthermore, cluster extent correction exhibited a spatial bias in sensitivity that was independent of effect size. In comparison, correction based on the Threshold-Free Cluster Enhancement (TFCE) statistic approximately doubled sensitivity across tasks but increased spatial bias. These results suggest that we have, until now, only measured the tip of the iceberg in the activation-mapping literature due to our goal of limiting the familywise error rate through cluster extent-based inference. There is a need to revise our practices to improve sensitivity; we therefore conclude with a list of modern strategies to boost sensitivity while maintaining respectable specificity in future investigations.

REACTIVITY TO THE MEASUREMENT OF PSYCHOLOGICAL WELL-BEING IN OLDER ADULTS

Although it is known that measurement reactivity can yield medium-sized effects (Cohen’s d = .50) on anxiety, its effects on psychological well-being (PWB) measures (e.g., purpose in life, personal growth) are unknown. The aim of this study was to evaluate reactivity to the measurement of PWB in older adults. Ninety-four adults aged 60 ≥ years (mean = 75) were recruited from a fitness center, retirement home and community center in Indiana. All participants received a questionnaire via postal mail at baseline (T1) and 2-3 weeks later (T2). Using block randomization (block size = 16), older adults were randomly allocated (1:1 ratio) to one of two conditions: PWB measures assessed at T1 and T2; and PWB measures were at T2 only. Purpose in life and personal growth were assessed using Ryff’s PWB scales. Multiple imputation analysis was conducted to account for attrition at T2 (18%), and all participants were analyzed according to the condition they were originally assigned. ANCOVA, controlling for recruitment sites, revealed that purpose in life (p = .03), but not personal growth (p = .08), T2 scores were on average lower when PWB was measured twice compared to those when PWB was measured once. The detected difference in purpose in life T2 scores was of medium size (d [95%CI] = - .50 [-.95, -.04]). This finding suggests that initial or later scores might be biased – a problematic finding because if ignored, measurement reactivity has the potential to affect conclusions drawn from gerontological research that focuses on PWB.

Emotion Dysregulation: An Explanatory Construct in the Relation Between HIV-Related Stigma and Hazardous Drinking among Persons Living with HIV/AIDS.

The prevalence of hazardous alcohol use among people living with HIV/AIDS (PLHIV) is common and related to numerous health problems among individuals in this group. Stigma is associated with hazardous drinking among stigmatized groups, but this relationship has yet to be examined among PLHIV. Moreover, there is a lack of research in identifying the mechanisms underlying this association. Emotion dysregulation is one potential construct that may explain the association between stigma and hazardous alcohol use among PLHIV. The present study examined the indirect effect of HIV stigma and hazardous alcohol use via emotion dysregulation. The sample included 98 PLHIV (60.2% male, M age = 48.40, SD = 7.75). Results indicated significant and medium-sized indirect effects of HIV stigma and its subfacets (enacted stigma and negative self-image) in terms of hazardous alcohol use via emotion dysregulation. Alternative models did not yield significant indirect effects. The results document an indirect association between HIV stigma and hazardous alcohol use via emotion dysregulation. These findings may provide novel, initial empirical insight into the nature of the stigma-hazardous drinking relation among PLHIV.

Social and Personal Power: A Closer Examination

Abstract. We thank Mayiwar and Lai (2019) for conducting a replication of Study 1 in Lammers, Stoker, and Stapel (2009) but disagree with their conclusions. Instead, we conclude that their results largely support ours. The results replicate the theoretical distinction between social and personal power, replicate that recalling social versus personal power produces dissimilar levels of stereotyping, and replicate that they produce similar levels of behavioral approach orientation. We discuss the weaker results on stereotyping as the result of the use of an unreliable measure and conclude that despite this, the data are consistent with the possibility of medium-sized effects. We discuss the null-effects on behavioral approach (compared to control) as the result of a change in instructions. We end with a discussion on the implications for the social–personal power distinction and the power literature in general, with a particular focus on how future replication efforts may provide even greater insight.

Testosterone Levels and Sexual Quality of Life After Stereotactic Body Radiation Therapy for Prostate Cancer: A Multi-Institutional Analysis of Prospective Trials

The impact of higher scatter doses per fraction on testicular function and quality of life after prostate stereotactic body radiation therapy (SBRT) is poorly studied. Six hundred thirty-six patients treated with SBRT for low- to intermediate-risk prostate cancer from 2009 to 2014 were included. Changes in testosterone and in sexual and hormonal domain scores on the Expanded Prostate Cancer Index Composite-26 (EPIC) questionnaire over a 24-month period were evaluated via a 1-sided t test. EPIC score changes were evaluated in comparison with a distribution-based minimal clinically important difference threshold, wherein changes of greater than one half or greater than one third of the standard deviation in each domain were considered as medium-sized or small-sized effects, respectively. Median and mean percent changes in testosterone at the 3- to 6-month, 7- to 12-month, 13- to 18-month, and 19- to 24-month time periods were -13.41% and -4.49% (P = .02); -12.23% and -2.77% (P = .13); -11.20% and -0.29% (P = .47); -5.00% and + 1.20% (P = .65). When analyzed after dividing the cohort into 3 groups based on baseline testosterone values using tertiles, testosterone tended to increase in patients in the first group and decrease in patients in the third group. Overall, the decline in EPIC hormonal domain scores never exceeded the threshold for a small-sized effect, though the decline in EPIC sexual domain scores did pass this threshold at the 19- to 24-month time period (mean 10.90 point decline). This decline was not present when groups were examined individually. In this large cohort of prospectively followed patients, there was a transient decline in testosterone shortly after SBRT that normalized by 24 months posttreatment. There was no significant change in EPIC hormonal domain scores. A significant decline in EPIC sexual domain scores, consistent with a small-sized clinically detectable difference, manifested between 19 and 24 months of follow-up. These results are consistent with testosterone decline patterns and sexual function changes seen after other forms of photon-based radiation therapy.

Cross-validation of transtheoretical model smoking cessation measures in Chicago WIHS women smokers with and at risk for HIV.

People with and at risk for HIV have high rates of smoking, increasing their morbidity and mortality. Effective cessation interventions are needed for this group. Transtheoretical model (TTM)-tailored interventions have demonstrated efficacy, but measures need cross-validation in this population. TTM cessation measures were evaluated in women smokers with and at risk for HIV (N = 111) from Chicago Women's Interagency HIV Study (WIHS). Confirmatory factor analyses evaluated measurement models. MANOVAs examined relationships between constructs and stage subgroups. For decisional balance, the two-factor uncorrelated model was best (χ2(20) = 13.96; comparative fit index [CFI], 1.0; root mean square error of approximation [RMSEA] = .00), with good (pros α = .78) and fair (cons α = .55) four-item alphas. The one-factor temptations model (α = .90) showed reasonable fit (χ2(18) = 80.22; CFI = .89; RMSEA = .177). Processes of change subscales had fair to good two-item alphas (α = .49-.77) and fit a 10-factor fully correlated model (χ2(125) = 222.72; CFI = .88; RMSEA = .084). MANOVAs by stage of change replicated expected patterns for the pros, overall temptations, and two process subscales with medium-sized effects (η2 = .06-.18). Contrary to expectations, no differences by stage were found for cons or temptation negative affect subscales. The structures of these TTM measures replicated with good internal and external validity, except for the cons, which needs refinement. Negative affect temptations was structurally sound, but did not vary by stage group potentially reflecting this sample's moderate depression levels and/or their reliance on smoking to deal with negative affect. Results support the use of most TTM measures in research and tailored interventions to increase smoking cessation among women smokers with and at risk for HIV and highlight the importance of managing negative affect in cessation materials targeting this group.

Short and long-term effects of a mathematics tablet intervention for low performing second graders.

Using a randomized placebo controlled design, we examined the direct and follow-up effects (at 6 and 12 months) of a mathematics tablet intervention. Math training focused primarily on basic arithmetic (addition and subtraction facts up to 12), and secondarily on number knowledge and word problems. We investigated the moderating effects of IQ and socioeconomic factors, and additive effects of working memory (WM) training. A representative sample of 283 low performing second-grade students were randomly assigned to control (n = 52), reading placebo (n = 78), math intervention (MA; n = 76), or math plus WM training (MA + WM; n = 77). Both math conditions scored significantly higher than control and placebo on the posttest of basic arithmetic, but not on arithmetic transfer and problem solving. WM training did not show additive effects. Given the virtually identical patterns, we collapsed the control and placebo, respectively, MA and MA + WM conditions. The collapsed MA/MA + WM condition demonstrated significant medium-sized effects (d = 0.53–0.67) on basic arithmetic compared with the collapsed control/placebo condition at posttest. There was a fadeout of effects at 6-month follow-up (d = 0.18–0.28), that declined further at 12 months (d = 0.03–0.13). IQ was a significant moderator of direct and long-term effects on addition up to 12 and subtraction up to 18, where students with lower IQ benefitted more than higher IQ students. Socioeconomic factors did not moderate outcome. The intervention effectively improved basic arithmetic among low performing second graders. Although the effects waned at 6-month follow-up, there was some indication that children with lower IQ demonstrated sustained gains. (PsycINFO Database Record (c) 2018 APA, all rights reserved)

How Americans Respond to Information About Global Warming's Health Impacts: Evidence From a National Survey Experiment.

Americans tend to see global warming as a distant threat, but a small body of previous research suggests that information about the health implications of global warming may enhance public engagement with the issue. We sought to extend those findings with a longitudinal study that examined how Americans react to information about eight specific categories of health impacts from global warming. In winter 2017, we conducted a two‐wave survey experiment using a quota sample of American adults (n = 2,254). Participants were randomly assigned to a treatment group who read eight brief essays about different categories of health impacts from global warming or to a control group who received no information. Participants answered questions before reading the essays, immediately after reading each essay and at the conclusion of all essays (treatment participants only), and 2–3 weeks later. Reading the information had small‐ to medium‐sized effects on multiple indicators of participants' cognitive and affective engagement with global warming, especially among people who are politically moderate and somewhat conservative; some of these changes persisted 2–3 weeks later. Some impacts were seen as more novel and worrisome, including illnesses from contaminated food, water, and disease‐carrying organisms. Our findings provide the most definitive evidence to date about the importance of raising awareness about the health impacts of global warming. While participants believed all of the essays as offered valuable information, educational efforts might most productively focus on impacts that are relatively less familiar and more emotionally engaging, such as food‐, water‐, and vector‐borne illnesses.

Does your mindfulness benefit others? A systematic review and meta-analysis of the link between mindfulness and prosocial behaviour.

Mindfulness-based meditation practices have received substantial scientific attention in recent years. Mindfulness has been shown to bring many psychological benefits to the individual, but much less is known about whether these benefits extend to others. This meta-analysis reviewed the link between mindfulness - as both a personality variable and an intervention - and prosocial behaviour. A literature search produced 31 eligible studies (N=17,241) and 73 effect sizes. Meta-analyses were conducted using mixed-effects structural equationmodels to examine pooled effects and potential moderators of these effects. We found a positive pooled effect between mindfulness and prosocial behaviour for both correlational (d=.73 CI 95% [0.51 to 0.96]) and intervention studies (d=.51 CI 95% [0.37 to 0.66]). For the latter, medium-sized effects were obtained across varying meditation types and intensities, and across gender and age categories. Preliminary evidence is presented regarding potential mediators of these effects. Although we found that mindfulness is positively related to prosociality, further research is needed to examine the mediators of this link and the contexts in which it is most pronounced.

The Relationship Between English Reading Proficiency and Academic Achievement of First-Year Science and Mathematics Students in a Multilingual Context

This study reports on a conceptual model that provides insight into the relationship between English reading proficiency and academic performance of first-year science and mathematics university students in Ghana, and an empirical test of that model. Longitudinal data were acquired from a sample of 133 students. Using three different mediation analyses, the study demonstrated significant medium-sized effects of English reading proficiency on students’ grade point average (GPA) by the end of year 1 and a small but significant indirect relationship between reading proficiency and the final GPA scores by the end of year 4, mediated by the GPA scores after year 1. These findings show that the academic English reading proficiency of students in a non-western multilingual academic context is important for their academic achievement. It also found that academic results obtained by students in their first-year at University were a sound predictor for success at the end of their studies. Results from this study confirm the need for universities in multilingual settings to invest in L2 students’ English reading proficiency at the start of their academic programs. Instructional recommendations are made, along with suggestions for further study.

Alexithymia and autistic traits as possible predictors for traits related to depression, anxiety, and stress: A multivariate statistical approach

Our study focused on the general population and explored the relationships between autistic traits and alexithymia, on the one hand, and traits related to depression, anxiety, and stress, on the other, using a multivariate statistical approach. In previous research, autistic traits and alexithymia have been linked to these traits both in clinical populations and in the general population. We also investigated a possible multiplicative effect of autistic traits and alexithymia and attempted to determine which of these two variables is the better predictor for health outcomes. An online survey was conducted, and 302 participants were included in the statistical analysis. A structural equation modelling approach was chosen, and a model based on prior findings was designed and tested by using IBM SPSS AMOS 21. The results showed significant, medium-sized effects of alexithymia on depression, anxiety, and stress. Additionally, a medium-sized significant effect of autistic traits on depression, a small significant effect on stress, and a small nonsignificant effect on anxiety were found. The interaction term of alexithymia and autistic traits had no significant effects on any of the endogenous variables. Alexithymia can be considered the better predictor for anxiety in this sample, and it is unlikely that a multiplicative effect of alexithymia and autistic traits exists. The use of multivariate statistical methods provided additional information for understanding the investigated constructs and their interdependence.

Neurocognitive functioning over the course of trauma-focused psychotherapy for PTSD: Changes in verbal memory and executive functioning.

Individuals with post-traumatic stress disorder (PTSD) have neurocognitive deficits in verbal memory and executive functioning. In this study, we examined whether memory and executive functioning changed over the course of treatment and which clinical variables were associated with change. Neuropsychological assessments were administered at baseline and endpoint of a randomized controlled trial as secondary outcome. Trauma survivors (n=88) diagnosed with PTSD received trauma-focused psychotherapy within a 17-week randomized controlled trial. Neuropsychological tests were the California Verbal Learning Test, Rivermead Behavioural Memory Test, Stroop Color Word Test, and Trail Making Test. Significant, small- to medium-sized improvements in verbal memory, information processing speed, and executive functioning were found after trauma-focused psychotherapy (Cohen's d 0.16-0.68). Greater PTSD symptom decrease was significantly related to better post-treatment neurocognitive performance (all p<.005). Patients with comorbid depression improved more than patients with PTSD alone on interference tasks (p<.01). No differences emerged between treatment conditions and between patients on serotonergic antidepressants and those who were not. This study suggests that neurocognitive deficits in PTSD can improve over the course of trauma-focused psychotherapy and are therefore at least partly reversible. Improvements over treatment are in line with previous neuropsychological and neuroimaging studies and effect sizes exceed those of practice effects. Future research should determine whether these changes translate into improved functioning in the daily lives of the patients. Patients with PTSD have difficulties performing verbal memory tasks (e.g., remembering a grocery list, recall of a story) and executive functioning tasks (e.g., shifting attention between two tasks, ignoring irrelevant information to complete a task). Verbal memory, information processing speed, and executive functioning significantly improved in patients with post-traumatic stress disorder over the course of trauma-focused psychotherapy. Improvements were equal in size for two different trauma-focused psychotherapies (Eye movement desensitization and reprocessing therapy and brief eclectic psychotherapy for PTSD). Medium-sized effects were found for recall of a story, whereas effects in other aspects of verbal memory, information processing speed, and executive functioning were small-sized. No causal attributions can be made because we could not include a control group without treatment for ethical reasons. Findings may be more reflective of patients who completed treatment than patients who prematurely dropped out as completers were overrepresented in our sample.

Modeling public responses to soft-target transportation terror

Transportation systems are one of the most frequent and high-profile targets for terrorist attacks, and such attacks can cause reduced or altered public travel behavior that can have severe economic consequences. Thus, understanding the relationship between transportation terror and public response is critical. We recruited n = 430 participants to read one of three hypothetical transportation-based terror attacks, and use Partial Least Squares path modeling to identify the interrelationships between the affective, cognitive, and (intended) behavioral facets of their reactions. The three terror scenarios were structured to allow for comparisons between a cyber and non-cyber attack on ground transportation, and an aviation versus ground explosives attack, which allowed us to test the robustness of the path model across situational features. Results indicated that the attack features did not moderate any of the interrelationships between reaction variables, but had medium-sized effects on self-reported risk perception. Collapsing data from all three scenarios into a single path model confirmed previously reported findings regarding the opposing roles of fear and anger in risk perception, suggested differing roles for terrorism risk attitudes and general risk attitudes, and found a surprisingly negligible role for self-reported trust in government. Implications for further research on soft-target and transportation-based terrorism risk perception are discussed.

Applying “First Principles of Instruction” as a design theory of the flipped classroom: Findings from a collective study of four secondary school subjects

The flipped classroom approach is a type of technology-enhanced pedagogy that has grown popular in education settings. An increasing number of empirical studies have evaluated this approach, but there is still no adequate theoretical framework for guiding the design and implementation of flipped classrooms. Furthermore, few such studies have been conducted in secondary school contexts, and the effects of flipped classrooms have not been adequately compared with those of non-flipped classrooms. This study aims to address these research gaps by applying the meta design theory “First Principles of Instruction” to design our flipped classroom approach. A two-stage study was conducted in two secondary schools, involving a total of 382 students and five teacher participants from four subject areas, namely mathematics, physics, Chinese language, and information and communication technology (ICT). Based on the experience of the pilot study (Study 1), we refined our flipped classroom model and examined its efficacy through a quasi-experimental design in the main study (Study 2). Although the students in the flipped ICT course had learning outcomes similar to those of students in the non-flipped ICT course, the levels of student achievement in the other three courses (i.e., mathematics, physics, and Chinese language) were improved after flipping, with a small to medium-sized effects. The design, benefits, and challenges of the model are discussed. We conclude by making several recommendations for practice, and suggesting ideas for further research.

Facilitating dual careers by improving resistance to chronic stress: effects of an intervention programme for elite student athletes

The starting point of this contribution is the potential risk to health and performance from the combination of elite sporting careers with the pursuit of education. In European sport science and politics, structural measures to promote dual careers in elite sports have been discussed increasingly of late. In addition to organisational measures, there are calls for educational-psychological intervention programmes supporting the successful management of dual careers at the individual level. This paper presents an appropriate intervention programme and its evaluation: stress-resistance training for elite athletes (SRT-EA). It comprises 10 units, each lasting 90 minutes. It is intended for athletes and aims to improve their resistance to chronic stress. The evaluation was carried out in a quasi-experimental design, with three points of measurement (baseline, immediately after, and three months after) and two non-randomised groups: an intervention group (n = 128) and an untreated control group (n = 117). Participants were between 13 and 20 years of age (53.5% male) and represented various Olympic sports. Outcome variables were assessed with questionnaires. Significant short- and mid-term intervention effects were explored. The intervention increased stress-related knowledge, general self-efficacy, and stress sensitivity. Chronic stress level, stress symptoms, and stress reactivity were reduced. In line with the intention of the intervention, the results showed short- and mid-term, small to medium-sized effects. Accordingly, separate measurements at the end of the intervention and three months later showed mostly positive subjective experiences. Thus, the results reinforce the hope that educational-psychological stress-management interventions can support dual careers.