Warren E. Hathaway, Ph.D.
Hathaway Planning & Consulting Services
7607 - 183 St.
Edmonton, AB T5T 2A8
Based on a review of the literature and a pilot study conducted from 1981 to 1985, a study was carriedBased on a review of the literature and a pilot study conducted from 1981 to 1985, a study was carriedout that examined physical development and school performance effects of different lighting systems onelementary students. Students’ dental health, growth and development, attendance, and academicachievement were examined under four different types of lighting: (a) full spectrum fluorescent lamps, (b)full spectrum fluorescent lamps with ultraviolet light enhancements, (c) cool white fluorescent lamps, and(d) high pressure sodium vapor lamps.
Data on 327 students, in Grade 4 at the end of the 1986-87 schoolyear, were collected at the start and at the conclusion of the study, which spanned two years. 7he resultsindicated that over the two year period, students under full spectrum fluorescent lamps with ultravioletsupplements developed fewer dental cavities and had better attendance, achievement, and growth anddevelopment than students under other lights. Students under the high pressure sodium vapor lamps hadthe slowest rates of growth and development as well as the poorest attendance and achievement. On thebasis of the findings of this study it was concluded that lights have important non-visual effects on studentswho are exposed to them on a regular basis in classrooms.