title: [Effect of Light Color Temperature on Human Concentration and Creativity].
abstract: Light has different biological effects depending on the color temperature and intensity. This may be the reason for its differing effects. We investigated the influence of color temperature (3000 K, 4500 K, 6000 K) under constant high intensity (1000 Lux) on concentration and creativity of 50 students and employees of the Cologne University of Applied Sciences, Campus Gummersbach (age: 30.9 +/- 10.8y.). As test method we used d2-bq-test, creativity test (mean of the number of ideas on 5 themes), word test and logic test. In addition, test subjects were asked to evaluate their impression of light by means of a questionnaire. To exclude the circadian influence and learning effects on the result, we performed tests at the same time of the day using a random order of color temperature. We found that creativity was better under warm light (3000 K) than under colder light (4500 K, 6000 K). Concentration was best under cold light (6000 K). Under the same light intensity conditions, subjects judged blue light (6000 K) to be brighter than red light (3000 K).
authors.affiliation: Neurologische Klinik, KKH Gummersbach - Lehrkrankenhaus Universität Köln, Gummersbach.
authors.forename: W U
authors.initials: WU
authors.lastname: Weitbrecht
authors.affiliation: Analog- und Optoelektronik, Institut für Elektrotechnik & Information Engineering, Fachhochschule Köln, Campus Gummersbach.
authors.forename: H
authors.initials: H
authors.lastname: Bärwolff
authors.affiliation: Analog- und Optoelektronik, Institut für Elektrotechnik & Information Engineering, Fachhochschule Köln, Campus Gummersbach.
authors.forename: A
authors.initials: A
authors.lastname: Lischke
authors.affiliation: Analog- und Optoelektronik, Institut für Elektrotechnik & Information Engineering, Fachhochschule Köln, Campus Gummersbach.
authors.forename: S
authors.initials: S
authors.lastname: Jünger
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology*; D003116:Color; D003405:Creativity; D005260:Female; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008027:Light; D008128:Logic; D008297:Male; D009483:Neuropsychological Tests; D011597:Psychomotor Performance / Q000528:radiation effects; D013315:Stress, Psychological / Q000523:psychology; D055815:Young Adult