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Culture refers to behaviours that are socially learned and persist within a population over time. Increasing evidence suggests that animal culture can, like human culture, be cumulative: characterized by sequential innovations that build on previous ones1. However, human cumulative culture involves behaviours so complex that they lie beyond the capacity of any individual to independently discover during their lifetime1-3. To our knowledge, no study has so far demonstrated this phenomenon in an invertebrate. Here we show that bumblebees can learn from trained demonstrator bees to open a novel two-step puzzle box to obtain food rewards, even though they fail to do so independently. Experimenters were unable to train demonstrator bees to perform the unrewarded first step without providing a temporary reward linked to this action, which was removed during later stages of training. However, a third of naive observer bees learned to open the two-step box from these demonstrators, without ever being rewarded after the first step. This suggests that social learning might permit the acquisition of behaviours too complex to 're-innovate' through individual learning. Furthermore, naive bees failed to open the box despite extended exposure for up to 24 days. This finding challenges a common opinion in the field: that the capacity to socially learn behaviours that cannot be innovated through individual trial and error is unique to humans.
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Bees , Behavior, Animal , Food , Knowledge , Learning , Reward , Social Behavior , Animals , Humans , Bees/physiology , Culture , TeachingABSTRACT
BACKGROUND: Little is known about the effectiveness and cost-effectiveness of train-the-trainer implementation strategies in supporting mental health evidence-based practices in schools, and about the optimal level of support needed for TT strategies. METHODS: The current study is part of a larger type 2 hybrid cluster randomized controlled trial. It compares two train-the-trainer strategies, Train-the-Trainer (TT) and Train-the-Trainer plus ongoing consultation for trainers (TT +) on the delivery of a group cognitive behavioral treatment protocol for anxiety disorders. Participants were 33 therapists, 29 supervisors, and 125 students who were at risk for anxiety disorders from 22 urban schools. Implementation outcomes were implementation fidelity and treatment dosage. Student outcomes were child- and parent-reported symptoms of anxiety, child-reported symptoms of depression, and teacher-reported academic engagement. We estimated the cost of implementing the intervention in each condition and examined the probability that a support strategy for supervisors (TT vs TT +) is a good value for varying values of willingness to pay. RESULTS: Therapists in the TT and TT + conditions obtained similarly high implementation fidelity and students in the conditions received similar treatment dosages. A mixed effects modeling approach for student outcomes revealed time effects for symptoms of anxiety and depression reported by students, and emotional disaffection reported by teachers. There were no condition or condition × times effects. For both conditions, the time effects indicated an improvement from pre-treatment to post-treatment in symptoms of anxiety and depression and academic emotional engagement. The average cost of therapist, supervisor, and consultant time required to implement the intervention in each condition was $1002 for TT and $1431 for TT + (p = 0.01). There was a greater than 80% chance that TT was a good value compared to TT + for all values of willingness to pay per one-point improvement in anxiety scores. CONCLUSIONS: A TT implementation approach consisting of a thorough initial training workshop for therapists and supervisors as well as ongoing supervision for therapists resulted in adequate levels of fidelity and student outcomes but at a lower cost, compared to the TT + condition that also included ongoing external expert consultation for supervisors. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT02651402.
Subject(s)
Cognitive Behavioral Therapy , Humans , Cost-Benefit Analysis , Cognitive Behavioral Therapy/methods , Mental Health , Students/psychology , SchoolsABSTRACT
Background: Train-the-trainer (TT) implementation strategies (in which designated clinicians are trained to then train others in an intervention) are promising approaches to support mental health clinician use of evidence-based interventions in school contexts. However, there is little evidence to date examining clinicians' perceptions of the acceptability and feasibility of TT strategies, or comparing clinicians' perceptions of different types of TT strategies. Methods: The current study was conducted as part of a larger hybrid effectiveness-implementation trial, in which school-based therapists and supervisors received one of two different types of implementation support to implement cognitive behavioral therapy (CBT) groups for anxiety: TT (i.e., initial training for therapists and supervisors) or enhanced TT (TT+; i.e., initial training for therapists and supervisors, and ongoing external consultation for supervisors). We used applied thematic analysis to compare qualitative interview transcripts from 28 therapist interviews and 33 supervisor interviews from therapists and supervisors who received TT or TT+ support and report themes that were similar and different across the two groups. Results: Most themes were similar across the TT and TT+ conditions: therapists and supervisors in both conditions perceived the group anxiety intervention as acceptable and viewed supervision as acceptable, helpful, and feasible. Therapists and supervisors in both conditions had mixed impressions of the contextual appropriateness of the group anxiety intervention, and some reported logistical challenges with weekly supervision. Some unique themes were identified among the TT+ condition, including supervisors experiencing professional growth, and therapists and supervisors perceiving supervision as critically important and enjoyable. Conclusions: These results suggest that TT implementation support, using a model in which an internal supervisor receives initial training and then provides ongoing supervision, is acceptable and feasible to support a group CBT intervention in schools. The results also highlight additional benefits that therapists and supervisors perceived when supervisors received ongoing consultation. Clinical Trial Registration Information: The clinical trial from which these data were derived was registered at ClinicalTrials.gov (https://clinicaltrials.gov/) prior to the time of first patient enrollment. The registration number is: NCT02651402.
It is important to understand how to best support mental health clinicians in using evidence-based interventions in school contexts. Train-the-trainer (TT) strategies, in which designated clinicians receive training to then support others in using the intervention, may be promising, and it is important to determine the optimal TT model. However, little is known about how clinicians perceive the acceptability and feasibility of implementing evidence-based mental health interventions with different types of TT support, which can include training and/or ongoing consultation for internal trainers. To address this gap, we used a qualitative approach to examine and compare themes from semistructured interviews with therapists and supervisors participating in two different types of TT implementation support to deliver an evidence-based group CBT intervention for anxiety within schools. Therapists and supervisors receiving both kinds of support had mostly positive perceptions of the intervention and implementation support. They viewed the group anxiety intervention as acceptable and impactful, although they had mixed perceptions about its contextual appropriateness. They viewed supervision as acceptable, helpful, and generally feasible, although challenging at times. However, unique themes among the group who received the more intensive type of TT support, such as supervisors experiencing professional growth over time, suggest that there may be additional benefits to the more intensive support. Overall, these results suggest that TT strategies are an acceptable and feasible approach to support clinicians in delivering group CBT in schools. This study highlights the benefit of embedding qualitative interviews within randomized controlled trials to better understand clinician experiences and perspectives.
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Background: Cognitive behavioral therapy (CBT) for pediatric anxiety is efficacious for reducing anxiety symptoms and improving functioning, but many children are unable to access CBT for anxiety in community settings. Schools are an important setting in which children access mental health care, including therapy for anxiety. In this setting, therapy is usually delivered by Masters-level therapists. Objectives: Friends for Life (FRIENDS), a 12-session, manualized, group CBT program for anxiety has demonstrated effectiveness when implemented in schools. However, prior research has also found challenges regarding feasibility and cultural fit when delivering FRIENDS in the urban school context. To address these challenges, we adapted FRIENDS for implementation in the school setting so that it might be more feasible and culturally appropriate for low-income, urban schools in the United States, while maintaining the core components of treatment. The current study uses a mixed-method approach to compare the effectiveness, cost-effectiveness, and perceived appropriateness of FRIENDS and CATS when delivered by Masters-level therapists with train-the-trainer support. Materials and methods: First, we compared change scores for student outcomes (i.e., child-report MASC-2 total score, parent-report MASC-2 total score, teacher-report Engagement and Disaffection subscale scores) from pre- to post- treatment between students receiving FRIENDS and students receiving CATS to assess whether the two conditions resulted in equivalent outcomes. Second, we compared the cost and cost-effectiveness between the groups. Finally, we used an applied thematic analysis to compare appropriateness of the interventions as perceived by therapists and supervisors. Results: The mean change score for the child-reported MASC-2 was 1.9 (SE = 1.72) points in the FRIENDS condition and 2.9 (SE = 1.73) points in the CATS condition; results indicated that the conditions were similar in their treatment effects, and symptom reductions were small in both groups. The modified protocol, CATS, was shown to cost significantly less to implement compared to FRIENDS and showed greater cost-effectiveness. Finally, compared to therapists and supervisors in the CATS condition, therapists and supervisors in the FRIENDS condition more strongly described aspects of the intervention that were not appropriate for their context and in need of more extensive adaptations. Conclusion: Relatively brief, group CBT for anxiety, with adaptations to improve cultural fit, is a promising approach to treat youth anxiety symptom when delivered by school-based therapists with train-the-trainer implementation support.
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BACKGROUND: An increasing number of schools in rural settings are implementing multi-tier positive behavioral interventions and supports (PBIS) to address school-climate problems. PBIS can be used to provide the framework for the implementation of evidence-based practices (EBPs) to address children's mental health concerns. Given the large service disparities for children in rural areas, offering EBPs through PBIS can improve access and lead to better long-term outcomes. A key challenge is that school personnel need technical assistance in order to implement EBPs with fidelity and clinical effectiveness. Providing ongoing on-site support is not feasible or sustainable in the majority of rural schools, due to their remote physical location. For this reason, remote training technology has been recommended for providing technical assistance to behavioral health staff (BHS) in under-served rural communities. OBJECTIVES: The purpose of this study is to use the user-centered design, guided by an iterative process (rapid prototyping), to develop and evaluate the appropriateness, feasibility, acceptability, usability, and preliminary student outcomes of two online training strategies for the implementation of EBPs at PBIS Tier 2. METHODS: The study will employ a pragmatic design comprised of a mixed-methods approach for the development of the training platform, and a hybrid type 2, pilot randomized controlled trial to examine the implementation and student outcomes of two training strategies: Remote Video vs. Remote Video plus Coaching. DISCUSSION: There is a clear need for well-designed remote training studies focused on training in non-traditional settings. Given the lack of well-trained mental health professionals in rural settings and the stark disparities in access to services, the development and pilot-testing of a remote training strategy for BHS in under-served rural schools could have a significant public health impact. ETHICS AND DISSEMINATION: The project was reviewed and approved by the institutional review board. Results will be submitted to ClinicalTrials.gov and disseminated to community partners and participants, peer-reviewed journals, and academic conferences. TRIAL REGISTRATION: ClinicialTrials.gov, NCT05034198 and NCT05039164.
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BACKGROUND: The school is a key setting for the provision of mental health services to children, particularly those underserved through traditional service delivery systems. School-wide Positive Behavioral Interventions and Supports (PBIS) is a tiered approach to service delivery based on the public health model that schools use to implement universal (Tier 1) supports to improve school climate and safety. As our prior research has demonstrated, PBIS is a useful vehicle for implementing mental and behavioral health evidence-based practices (EBPs) at Tier 2 for children with, or at risk for, mental health disorders. Very little research has been conducted regarding the use of mental health EBPs at Tier 2 or how to sustain implementation in schools. METHODS/DESIGN: The main aim of the study is to compare fidelity, penetration, cost-effectiveness, and student outcomes of Tier 2 mental health interventions across 2 sustainment approaches for school implementers in 12 K-8 schools. The study uses a 2-arm, cluster randomized controlled trial design. The two arms are: (a) Preparing for Sustainment (PS)-a consultation strategy implemented by school district coaches who receive support from external consultants, and (b) Sustainment as Usual (SAU)-a consultation strategy implemented by school district coaches alone. Participants will be 60 implementers and 360 students at risk for externalizing and anxiety disorders. The interventions implemented by school personnel are: Coping Power Program (CPP) for externalizing disorders, CBT for Anxiety Treatment in Schools (CATS) for anxiety disorders, and Check-in/Check-out (CICO) for externalizing and internalizing disorders. The Interactive Systems Framework (ISF) for Dissemination and Implementation guides the training and support procedures for implementers. DISCUSSION: We expect that this study will result in a feasible, effective, and cost-effective strategy for sustaining mental health EBPs that is embedded within a multi-tiered system of support. Results from this study conducted in a large urban school district would likely generalize to other large, urban districts and have an impact on population-level child mental health. Trial registration ClinicalTrials.gov identifier number NCT04869657. Registered May 3, 2021.
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Mental Health Services , Mental Health , Anxiety Disorders/therapy , Humans , Randomized Controlled Trials as Topic , Referral and Consultation , School Health Services , SchoolsABSTRACT
Clinical studies have demonstrated a link between the eosinophil-selective chemokines, eotaxins (eotaxin-1/CCL11 and eotaxin-2/CCL24), eosinophils, and the inflammatory bowel diseases, Crohn's disease and ulcerative colitis (UC). However, the cellular source and individual contribution of the eotaxins to colonic eosinophilic accumulation in inflammatory bowel diseases remain unclear. In this study we demonstrate, by gene array and quantitative PCR, elevated levels of eotaxin-1 mRNA in the rectosigmoid colon of pediatric UC patients. We show that elevated levels of eotaxin-1 mRNA positively correlated with rectosigmoid eosinophil numbers. Further, colonic eosinophils appeared to be degranulating, and the levels positively correlated with disease severity. Using the dextran sodium sulfate (DSS)-induced intestinal epithelial injury model, we show that DSS treatment of mice strongly induced colonic eotaxin-1 and eotaxin-2 expression and eosinophil levels. Analysis of eosinophil-deficient mice defined an effector role for eosinophils in disease pathology. DSS treatment of eotaxin-2(-/-) and eotaxin-1/2(-/-) mice demonstrated that eosinophil recruitment was dependent on eotaxin-1. In situ and immunofluorescence analysis-identified eotaxin-1 expression was restricted to intestinal F4/80(+)CD11b(+) macrophages in DSS-induced epithelial injury and to CD68(+) intestinal macrophages and the basolateral compartment of intestinal epithelial cells in pediatric UC. These data demonstrate that intestinal macrophage and epithelial cell-derived eotaxin-1 plays a critical role in the regulation of eosinophil recruitment in colonic eosinophilic disease such as pediatric UC and provides a basis for targeting the eosinophil/eotaxin-1 axis in UC.
Subject(s)
Chemokine CCL11/biosynthesis , Chemotaxis, Leukocyte/immunology , Colitis, Ulcerative/immunology , Eosinophils/metabolism , Epithelial Cells/metabolism , Macrophages/metabolism , Adolescent , Animals , Child , Child, Preschool , Colitis, Ulcerative/metabolism , Colitis, Ulcerative/pathology , Colon/cytology , Colon/immunology , Eosinophils/immunology , Epithelial Cells/immunology , Female , Flow Cytometry , Fluorescent Antibody Technique , Humans , Immunohistochemistry , Intestinal Mucosa/immunology , Intestinal Mucosa/metabolism , Macrophages/immunology , Male , Mice , Oligonucleotide Array Sequence Analysis , RNA, Messenger/analysis , Reverse Transcriptase Polymerase Chain ReactionABSTRACT
While collective movement is ecologically widespread and conveys numerous benefits on individuals, it also poses a coordination problem: who controls the group's movements? The role that animal 'personalities' play in this question has recently become a focus of research interest. Although many animal groups have distributed leadership (i.e. multiple individuals influence collective decisions), studies linking personality and leadership have focused predominantly on the group's single most influential individual. In this study, we investigate the relationship between personality and the influence of multiple leaders on collective movement using homing pigeons, Columba livia, a species known to display complex multilevel leadership hierarchies during flock flights. Our results show that more exploratory (i.e. 'bold') birds are more likely to occupy higher ranks in the leadership hierarchy and thus have more influence on the direction of collective movement than less exploratory (i.e. 'shy') birds during both free flights around their lofts and homing flights from a distant site. Our data also show that bold pigeons fly faster than shy birds during solo flights. We discuss our results in light of theories about the evolution of personality, with specific reference to the adaptive value of heterogeneity in animal groups.This article is part of the theme issue 'Collective movement ecology'.