| 1. |
- Ebersole, Charles R., et al.
(författare)
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Many Labs 5: Testing Pre-Data-Collection Peer Review as an Intervention to Increase Replicability
- 2020
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Ingår i: Advances in Methods and Practices in Psychological Science. - : Sage. - 2515-2467 .- 2515-2459. ; 3:3, s. 309-331
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Tidskriftsartikel (refereegranskat)abstract
- Replication studies in psychological science sometimes fail to reproduce prior findings. If these studies use methods that are unfaithful to the original study or ineffective in eliciting the phenomenon of interest, then a failure to replicate may be a failure of the protocol rather than a challenge to the original finding. Formal pre-data-collection peer review by experts may address shortcomings and increase replicability rates. We selected 10 replication studies from the Reproducibility Project: Psychology (RP:P; Open Science Collaboration, 2015) for which the original authors had expressed concerns about the replication designs before data collection; only one of these studies had yielded a statistically significant effect (p < .05). Commenters suggested that lack of adherence to expert review and low-powered tests were the reasons that most of these RP:P studies failed to replicate the original effects. We revised the replication protocols and received formal peer review prior to conducting new replication studies. We administered the RP:P and revised protocols in multiple laboratories (median number of laboratories per original study = 6.5, range = 3-9; median total sample = 1,279.5, range = 276-3,512) for high-powered tests of each original finding with both protocols. Overall, following the preregistered analysis plan, we found that the revised protocols produced effect sizes similar to those of the RP:P protocols (Delta r = .002 or .014, depending on analytic approach). The median effect size for the revised protocols (r = .05) was similar to that of the RP:P protocols (r = .04) and the original RP:P replications (r = .11), and smaller than that of the original studies (r = .37). Analysis of the cumulative evidence across the original studies and the corresponding three replication attempts provided very precise estimates of the 10 tested effects and indicated that their effect sizes (median r = .07, range = .00-.15) were 78% smaller, on average, than the original effect sizes (median r = .37, range = .19-.50).
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| 2. |
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| 3. |
- Perrin, Sean, et al.
(författare)
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Cognitive Therapy for PTSD in Children and Adolescents
- 2017
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Ingår i: Evidence-Based Treatments for Trauma Related Disorders in Children and Adolescents. - Cham : Springer International Publishing. - 9783319461380 - 9783319461366 ; , s. 187-207
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Bokkapitel (refereegranskat)
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| 4. |
- Perrin, Sean, et al.
(författare)
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Cognitive Therapy for PTSD in Children and Adolescents
- 2024
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Ingår i: Evidence-Based Treatments for Trauma-Related Disorders in Children and Adolescents. - 9783319461366 - 9783319461380 ; , s. 187-207
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Bokkapitel (refereegranskat)abstract
- Children and adolescents exposed to traumatic events are at high risk of developing posttraumatic stress disorder (PTSD). With the rare exception of very young children, their PTSD presentations at the symptom level are similar to those of trauma-exposed adults, as are their patterns of psychiatric comorbidity, particularly for adolescents. Untreated, at least a significant proportion will carry on with symptoms at or above the diagnostic threshold or at sub-threshold levels that are still clinically impairing. The presence of untreated or poorly treated PTSD symptoms leaves the young person at significantly increased risk of developing other psychiatric disorders, a worsening of any pre-existing conditions, and with greater long-term impairments in educational, family, and peer functioning. Fortunately, evidence-based treatments exist with the first-line recommendation being trauma-focused cognitive behavioral therapies, with a growing body of evidence for the efficacy of eye movement desensitization and reprocessing therapy (EMDR). This chapter provides an update on the state of the literature with respect to the evidence base for trauma-focused CBT, and in particular for an explicitly cognitive approach, originally developed for use with adults and successfully adapted for use with children and adolescents across the age range. The chapter describes the theoretical underpinning for this approach, guidance on reliving (a form of exposure to update the trauma memory) and the modification of trauma-related beliefs (two primary target in treatment),
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| 5. |
- Senapathi, Deepa, et al.
(författare)
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Wild insect diversity increases inter-annual stability in global crop pollinator communities
- 2021
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Ingår i: Royal Society of London. Proceedings B. Biological Sciences. - : The Royal Society. - 1471-2954 .- 0962-8452. ; 288:1947
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Tidskriftsartikel (refereegranskat)abstract
- While an increasing number of studies indicate that the range, diversity and abundance of many wild pollinators has declined, the global area of pollinator-dependent crops has significantly increased over the last few decades. Crop pollination studies to date have mainly focused on either identifying different guilds pollinating various crops, or on factors driving spatial changes and turnover observed in these communities. The mechanisms driving temporal stability for ecosystem functioning and services, however, remain poorly understood. Our study quantifies temporal variability observed in crop pollinators in 21 different crops across multiple years at a global scale. Using data from 43 studies from six continents, we show that (i) higher pollinator diversity confers greater inter-annual stability in pollinator communities, (ii) temporal variation observed in pollinator abundance is primarily driven by the three-most dominant species, and (iii) crops in tropical regions demonstrate higher inter-annual variability in pollinator species richness than crops in temperate regions. We highlight the importance of recognizing wild pollinator diversity in agricultural landscapes to stabilize pollinator persistence across years to protect both biodiversity and crop pollination services. Short-term agricultural management practices aimed at dominant species for stabilizing pollination services need to be considered alongside longer term conservation goals focussed on maintaining and facilitating biodiversity to confer ecological stability.
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