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BackgroundSince Aedes aegypti mosquitoes preferentially breed in domestic containers, control efforts focus on larval source reduction. Our objectives were to design and test the effectiveness of a source reduction intervention to improve caregiver knowledge and behaviors in coastal Kenya.Methodology/principal findingsWe conducted a cluster-randomized controlled trial with 261 households from 5 control villages and 259 households from 5 intervention villages. From each household, one child (10-16 years old) and his or her primary caregiver participated in the intervention. We assessed caregiver knowledge and behavior at baseline, as well as 3 and 12 months after the intervention. We assessed household entomological indices at baseline and 12 months after the intervention to avoid seasonal interference. We conducted qualitative interviews with 34 caregivers to understand barriers and facilitators to change. We counted and weighed containers collected by children and parents during a community container clean-up and recycling event. After 12 months, caregiver knowledge about and self-reported behavior related to at least one source reduction technique was more than 50 percentage points higher in the intervention compared to control arm (adjusted risk differences for knowledge: 0.69, 95% CI [0.56 to 0.82], and behavior: 0.58 [0.43 to 0.73]). Respondents stated that other family members' actions were the primary barriers to proper container management. The number of containers at households did not differ significantly across arms even though children and parents collected 17,200 containers (1 ton of plastics) which were used to planted 4,000 native trees as part of the community event.Conclusions/significanceOur study demonstrates that source reduction interventions can be effective if designed with an understanding of the social and entomological context. Further, source reduction is not an individual issue, but rather a social/communal issue, requiring the participation of other household and community members to be sustained.

Researchers, stakeholders and funding organizations have embraced co-production of knowledge to solve sustainability problems. Research focusing on the practice of co-production can help us understand what works in what contexts and how to avoid potentially undesirable outcomes.

There has been growing interest among scholars regarding the role of the built environment on occupant wellbeing. Across five studies conducted online from January 2018 to July 2021, we investigate the impact of design interventions (materials, light, and decor representing diverse identities) on several constructs indicative of wellbeing (sense of belonging, self-efficacy, and environmental efficacy), using self-reported metrics. We hypothesize that natural materials, natural light and diverse representations lead to higher self-reported scores compared to artificial materials, no natural light and non-diverse representations. We find that, while our results vary across individual experiments, the synthesized effects of materials and light on all three dependent measures hold consistent across studies, supporting our hypothesized outcomes. We also examine the influence of seasonality, survey platform and design, and independent variables' dosage on survey results. We conclude with a discussion on the challenges associated with researching the psychological as well as behavioral impacts of design interventions in indoor spaces. [ABSTRACT FROM AUTHOR]

Past research has shown that out-of-school time (OST) programs can have substantial benefits for youth, but connecting youth to programs can be challenging for a variety of reasons. To address these challenges, community leaders working with youth in one Silicon Valley community approached the John W. Gardner Center for Youth and Their Communities (JGC) at Stanford University wanting to better understand the availability and use of youth OST opportunities. This community has a high number of youth facing multiple risk factors as well as a deep tradition of community service, resulting in a dense network of youth-serving organizations in a relatively small community. Partners wondered why many youth were disconnected from services when there were so many available. In response, the JGC collaborated with this group of partners to design and implement a local, community participatory case study. Combining detailed information about program availability, survey data collected by youth on their peers' OST activities, and crime and transit location data, we used a combination of GIS and quantitative data analyses to examine the supply and demand of youth programming and barriers to accessing those programs. This paper describes the process, methods, and initial findings of this project. (Contains 1 endnote and 2 figures.)

Invasive species (IS) threaten biodiversity and ecosystem functioning. To achieve landscape-scale reductions in IS and the associated gains for biodiversity, IS control efforts must be expanded across private lands. Enhancing IS control across private lands requires an understanding of the factors that motivate residents to engage or prohibit residents from engaging in efforts to control IS. Drawing from the collective interest model and literature, we sought to understand how a wide range of interpersonal, intrapersonal, and contextual factors might influence resident action around combating the invasive tree albizia (Falcataria moluccana), in the Puna District of Hawai'i. To do so, we used a cross-sectional survey of 243 residents and elastic net regression techniques. We found that residents' actions related to IS control were related to their perceptions of social norms and community reciprocity regarding albizia control, as well as their knowledge of effective control strategies and their risk perceptions regarding albizia. These findings suggest that, although common intervention approaches that focus on providing education or subsidies are important, they may be more effective at reducing the spread of IS if coupled with approaches that build community reciprocity and norms. [ABSTRACT FROM AUTHOR]