Latest Blog Posts
Welcome to the Research Design Connections blog, started in 2007. Recent blog entries are available here. Earlier blog entries (one for every working day since the beginning of May, 2007) are available to subscribers.
The Lighting Research Center, Rensselaer, has released materials that can support the development of energy efficient circadian lighting n classrooms and hospitals. As a press release from the LRC reports the LRC team “published new guidance documents for designing circadian-effective lighting in K-12 classrooms and hospital patient rooms while avoiding increased energy use. . . . For circadian entrainment and improvements in sleep quality and psychological health, high daytime light levels at the eye are necessary, followed by low evening/nighttime light levels in order to achieve a robust 24-hour light-dark pattern. However, the recommended light levels in K-12 classrooms and for general (non-exam) lighting in hospital patient rooms are generally too low for daytime circadian stimulation. . . . Designers can also increase the circadian-effectiveness of the overhead lighting by increasing overall light levels to 500 lx on the workplane for at least 2 hours during the daytime and using correlated color temperatures (CCTs) of 3500 K or higher. The most energy-efficient technique for designers to consider, however, is the addition of a supplemental layer of narrowband short-wavelength (blue) light in conjunction with typical overhead lighting.” The guidance documents from the LRC are located at https://www.lrc.rpi.edu/programs/energy/energy_design.html and at https://www.lrc.rpi.edu/programs/energy/energy_lights.html
“LRC Issues New Guidance for Implementing Circadian-Effective Lighting in Schools and Hospital Patient Rooms While Minimizing Energy Use.” 2021. Lighting Research Center, Rensselaer, https://www.lrc.rpi.edu/resources/newsroom/pr_story.asp?id=470#.YASwLC2ZNsM
Candido and colleagues surveyed people working in Australian office buildings to learn more about their experiences. They report that “A total of 1,121 post-occupancy evaluation (POE) surveys conducted in 9 offices were analyzed. All these premises hold a certification from the Green Building Council of Australia and two achieved a WELL rating. . . . Highest scores for overall satisfaction, workability, perceived productivity and health were reported on WELL-rated premises. Offices incorporating active design principles outperformed others on workability, satisfaction with work area, collaboration, unwanted interruptions, perceived productivity and health. ABW environments outperformed the traditional offices on spatial comfort, thermal comfort, noise and privacy, personal control, comfort of furnishing, adjustability of the work area and space to collaborate. People using sit–stand workstations reported spending significantly less time seated. . . . The best-performing offices implemented active and biophilic design, prioritized overall ergonomics and different spaces designed to support a variety of work-related activities.”
Christhina Candido, Samin Marzban, Shamila Haddad, Martin Mackey, and Angela Loder. “Designing Healthy Workspaces: Results from Australian Certified Open-Plan Offices.” Facilities, in press, https://doi.org/10.1108/F-02-2020-0018
Data collected in Jordan illustrate the complexities of moving into certified-green offices from other types of structures. Researchers report that “localised green building codes, especially in the developing world, often do not systematically recognise IEQ or health as crucial issues. . . . we follow 120 employees of a single organisation as they transition from four conventional office buildings to the first green building (GB), designed to the local Jordanian Green Building Guide. . . . Statistically significant differences in thermal conditions, positively biased towards the GB, were observed across the move, and this enhanced occupant thermal comfort. Surprisingly, no significant improvement in occupant perception of air quality, visual and acoustic comfort was detected after moving to the GB, while odour, mental concentration, and glare were perceived to be poor in the GB. . . . our results support the growing concern that green buildings may create unintended consequences in terms of occupant comfort and health in the pursuit of a better thermal environment and energy efficiency.”
Rana Elnaklah, Ian Walker, and Sukumar Natarajan. “Moving to a Green Building: Indoor Environment Quality, Thermal Comfort and Health.” Building and Environment, in press, https://doi.org/10.1016/j.buildenv.2021.107592
Fay and Maner studied links between physical and social warmth. They found that “Laboratory studies have linked variability in temperature to the psychology of social affiliation. In colder ambient environments, for example, people report greater loneliness, and they pursue both physical warmth and social affiliation (i.e., social warmth). Here, a field experiment tested whether tactile warmth [basically, touching something warm] eliminates the effect of colder ambient temperatures on desires for social affiliation. Consistent with previous research, people expressed greater intentions to affiliate on colder days. However, tactile warmth eliminated this effect. On colder (but not warmer) days exposure to a tactile warmth manipulation eliminated heightened desires for social affiliation. Findings suggest that seemingly subtle changes in temperature can have important implications for the psychology of social affiliation, and such findings apply to real-world contexts outside the laboratory.”
Adam Fay and Jon Maner. 2020. “Interactive Effects of Tactile Warmth and Ambient Temperature on the Search for Social Affiliation.” Social Psychology, vol. 51, no. 3, pp. 199-204, https://doi.org/10.1027/1864-9335/a000407
Hou and colleagues studied brain synchronization between musicians and people listening to their music; potential applications of their findings in other contexts are intriguing. The researchers report that they “used dual near-infrared spectroscopy (NIRS) to assess whether inter-brain synchronization between violinist and audience underlies the popularity of violin performance. In the experiment, individual audience members . . . watched pre-recorded videos, each lasting 100 s or so, in which a violinist performed 12 musical pieces. The results showed that the popularity of the performance correlated with the left-temporal inter-brain coherence (IBC) between the audience and the violinist. . . . Music appreciation involves the brains of music producers and perceivers in a temporally aligned network through which audiences perceive the intentions of the performer and show positive emotions related to the musical performance.”
Yingying Hou, Bei Song, Yinying Hu, Pafend Pan, and Yi Hua. 2020. “The Averaged Inter-Brain Coherence Between the Audience and a Violinist Predicts the Popularity of Violin Performance.” NeuroImage, vol. 211, 116655, https://doi.org/10.1016/j.neuroimage.2020.116655
Dzhambov and colleagues studied the effects of indoor and outdoor greenery on the wellbeing of people during the COVID pandemic. They determined via a survey that “Greenery experienced both indoors and outdoors supported mental health. . . . We employed two self-reported measures of greenery experienced indoors (number of houseplants in the home and proportion of exterior greenery visible from inside the home) and two measures of greenery experienced outdoors (presence/absence of a domestic garden and availability of neighborhood greenery). . . . The relative abundance of greenery visible from the home or in the neighborhood was associated with reduced depressive/anxiety symptoms and lower depression/anxiety rates. Having more houseplants or a garden was also associated with some of these markers of mental health. . . . [Study participants] who spent most of their time at home during the COVID-19 epidemic experienced better mental health when exposed to more greenery. Our findings support the idea that exposure to greenery may be a valuable resource during social isolation in the home.”
Angel Dzhambov, Peter Lercher, Matthew Browning, Drozdstoy Stoyanov, Nadezhda Petrova, Stoyan Novakov, and Donka Dimitrova. “Does Greenery Experienced Indoors and Outdoors Provide an Escape and Support Mental Health During the COVID-19 Quarantine?” Environmental Research, in press, https://doi.org/10.1016/j.envres.2020.110420
Lai, Webster, Kumari, and Sarkar (in press) make space-use suggestions related to social density management and appropriate social distancing: “School buildings are generally very inefficiently used, being unused at weekends and evenings. This gives scope for lower-density classes by spreading across time. . . . Future housing must also focus on the creation of a multi-functional design with inherent abilities to couple living with working to enable work-from-home routines that can not only facilitate performance efficiency but also individual’s wellbeing. . . As populations are restricted indoors, into limited per-capita space, the role of neighbourhood built environment becomes ever more important; its restorative potential in maintaining emotional resilience and mental wellbeing as well as enabling adequate levels of physical activity. . . . Cities have taken shape over tens and hundreds of years around a simple diurnal pattern based around working in the day and sleeping at night. As a result, much urban space is underused and can be de-crowded by smoothing usage over daily and weekly cycles.”
Ka Lai, Chris Webster, Sarika Kumari, and Chinmoy Sarkar. “The Nature of Cities and the Covid-19 Pandemic.” Current Opinion in Environmental Sustainability, in press, https://doi.org/10.1016/j.cosust.2020.08.008
Ogletree, Huang, Alberico, Marquet, Floyd, and Hipp identified the amenities parents are most interested in finding in the parks they visit with their children. A study published in the Journal of Healthy Eating and Active Living, based on data collected in North Carolina and New York City from low-income parents of 5- to 10-year oldswho visited parks, indicates that “While parents from diverse backgrounds most often value parks that offer amenities like playgrounds, sports fields and green spaces, they also want parks to feel safe. . . . Across all parents in the [North Carolina] Triangle, [the researchers] saw that safety and safe facilities were most often cited, followed closely by physical features like playground equipment, sports fields and green areas. . . . Parents who identified as Latinx in New York City highly valued the safety and security of the park, along with proximity and limited entrances. Latinx parents were also more likely to indicate the social environment of a park was important to them.”
“Study Identifies Amenities Parents Want in Public Parks.” 2020. Press release, North Carolina State University, https://news.ncsu.edu/2020/12/study-identifies-amenities-parents-want-in...
Neuroscientists affiliated with Technische Universitat Dresden found that we “hear” what we expect to hear. A press release from TU Dresden reports that “neuroscience research has revealed that the cerebral cortex constantly generates predictions on what will happen next, and that neurons in charge of sensory processing only encode the difference between our predictions and the actual reality.. . . new findings . . . show that not only the cerebral cortex, but the entire auditory pathway, represents sounds according to prior expectations.. . . Dr. Alejandro Tabas, first author of the publication, states on the findings: ‘Our subjective beliefs on the physical world have a decisive role on how we perceive reality. . . . All that we perceive might be deeply contaminated by our subjective beliefs on the physical world.’"
“We Hear What We Expect to Hear.” 2021. Press release, Technische Universitat Dresden, https://tu-dresden.de/tu-dresden/newsportal/news/menschen-hoeren-das-was...