A comparison of the effects of correlated colour temperature and gender on cognitive task performance

Hartstein, Lauren E.; Durniak, MT; Karlicek, R. F.; Berthier, NE

doi:10.1177/1477153517721728

Cited by 23 publications

(20 citation statements)

References 26 publications

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“…Contrary to our hypothesis, we found no differences between participants in each lighting condition on sustained attention. This contrasts previous findings with adults demonstrating positive impacts of higher CCT light on go/no-go task performance [ 14 , 44 ]. Accuracy on the task was high, with participants averaging approximately 80% correct on no-go trials, and both the control and experimental groups showed only minor improvement in accuracy from the baseline to test assessments, suggesting participants were performing near ceiling level.…”

Section: Discussioncontrasting

confidence: 99%

“…In addition, the main effect of Phase for reaction time on switch trials suggests that children in the experimental group gained significantly greater accuracy on switch trials than participants in the control group without sacrificing speed, consistent with results from previous work measuring the relationship between young children’s speed and accuracy on measures of executive function [ 47 ]. These results extend previous findings with adult participants that exposure to higher CCT light improves performance on a task switching task [ 13 , 14 ]. Results are discussed in the context of the relationship between the built environment and development, as well as emerging trends in technology.…”

Section: Discussionsupporting

confidence: 90%

“…Study settings and procedures were adapted from Hartstein, et al [ 14 ]. Testing took place in a small, windowless laboratory measuring 2.6 m x 2.2 m and 2.3 m tall, with a white ceiling and off-white painted walls.…”

Section: Methodsmentioning

confidence: 99%

“…a heart followed by a flower). Previous findings with adult participants demonstrated significant performance on switch trials following exposure to light set to a higher CCT [ 14 ]. Participants’ accuracy (percent correct) and reaction times on correct trials were recorded and analyzed by trial type.…”

Section: Methodsmentioning

confidence: 99%

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Light correlated color temperature and task switching performance in preschool-age children: Preliminary insights

2018

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Data from a growing number of experimental studies show that exposure to higher correlated color temperature (CCT) ambient light, containing more blue light, can positively impact alertness and cognitive performance in older children and adults. To date, few if any studies have examined whether light exposure influences cognitive task performance in preschool-age children, who are in the midst of rapid developmental changes in attention and executive function skills. In this study, healthy children aged 4.5–5.5 years (n = 20; 11 females) completed measures of sustained attention and task switching twice while being exposed to LED light set to either 3500K (a lower CCT) or 5000K (a higher CCT). A control group (n = 18; 10 females) completed the tasks twice under only the 3500K lighting condition. Although the lighting condition did not impact performance on the sustained attention task, exposure to the higher CCT light lead to greater improvement in preschool-age children’s task switching performance (F(1,36) = 4.41, p = 0.04). Children in the control group showed a 6.5% increase in task switching accuracy between time points, whereas those in the experimental group improved by 15.2%. Our primary finding–that exposure to light at a higher correlated color temperature leads to greater improvement in task switching performance–indicates that the relationship between the spectral power distribution of light and executive function abilities is present early in cognitive development. These data have implications for designing learning environments and suggest that light may be an important contextual factor in the lives of young children in both the home and the classroom.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 90%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Light correlated color temperature and task switching performance in preschool-age children: Preliminary insights

2018

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“…28 Our alertness during the day and ability to sleep at night are affected by the amount of circadian stimulus that each individual receives during the day. 27 According to Hartstein et al, 29 people improve their ability to maintain attention and transition between tasks (more positively so for females) when exposed to a higher CCT. Even though we may experience an increased alertness at higher CCT, the cooler light at more than 5000 K is often rated less positively.…”

Section: Glare and Eyestrainmentioning

confidence: 99%

Towards better lighting recommendations for open surgery

Hemphälä

Osterhaus

Larsson

et al. 2020

Lighting Research & Technology

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This study assesses the lighting requirements for operating theatres and the lighting conditions in a specific test case and proposes alternate ways of achieving a favourable visual environment. The hypothesis was that an increased illuminance level from general lighting and lower luminance contrasts between the essential task areas affect perceived lighting quality, visual ability and performance, as well as tiredness of medical staff performing surgical work. The investigation consisted of three parts: a laboratory study, followed by a field study and concluding with a retrospective study. In the laboratory study, each medical staff subject was exposed to four lighting scenarios with three illuminances from the operating light (12 lighting conditions), with no patients present. In the field and the retrospective study, the existing lighting scenario was compared to the highest-rated test lighting scenario (with illuminances more than double). The field study and the retrospective study took place with medical staff working under either the test general lighting condition or the existing general lighting condition. Increased illuminance from the general lighting and a higher correlated colour temperature did not improve the operating staff's visual ability. However, medical staff rated the change in lighting quality resulting from the increased general illuminance as an improvement in the work environment, both in the laboratory study and in the field study. Medical staff subjects using the operating theatre rated both perceived visual ability and lighting quality higher under the test lighting scenario. Tiredness was also rated lower under that test scenario. Based on the results from this study, general lighting levels of 2000 lx in the periphery of the operating room, 4000 lx surrounding the operating table and 5500 lx on the operating table are recommended by the authors. With reference to the selections made by the surgeons for the illuminance in the operating cavity, it is suggested that the central beam illuminance from the surgical luminaires be between 50,000 lx and 100,000 lx.

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The effects of light color temperatures on students' perceptual evaluations in design studios

Müezzinoğlu

Hidayetoğlu

Yıldırım

2021

Color Research & Application

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It was aimed in this study to determine the evaluations for "spatial quality," "social adaptation," and "individual productivity" of students in design studios, which used different light color temperature values. With this intention, a detailed research questionnaire was developed for measuring the effects on spatial perception of low color temperatures, daylight, and high color temperatures for a total of three different light color temperature values. A total of 113 students participated in the research questionnaire and the data obtained were analyzed with the SPSS package program. In conclusion, it was determined that the spaces lighted with the low color temperatures and daylight had more positive effects on the perceptual evaluations of the students compared to the spaces lighted with the high color temperatures according to the "spatial quality," "social adaptation," and "individual productivity" scales.Another result was that it was observed that the low color temperatures had somewhat more positive perceptual values compared to daylight. In addition, it was determined that males perceived more positively compared to females the interior design characteristics of the design studios.

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A comparison of the effects of correlated colour temperature and gender on cognitive task performance

Cited by 23 publications

References 26 publications

Light correlated color temperature and task switching performance in preschool-age children: Preliminary insights

Light correlated color temperature and task switching performance in preschool-age children: Preliminary insights

Towards better lighting recommendations for open surgery

The effects of light color temperatures on students' perceptual evaluations in design studios

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