Why is the Standard Celeration Chart printed light blue?
[Question and Answer contributed anonymously, and edited by Dr. Ogden Lindsley. September, 2000.] In the summer of 1967 Ogden Lindsley and his student Carl Koenig printed and tested out charts of various colours and discovered that blue worked best. As noted in Potts, Eshleman, & Cooper (1993), “the research team evaluated [charting speed], charting accuracy, charting fatigue, and color preference with charts printed in three shades each of red, orange, yellow, green, light blue, and light brown. Most charters preferred a shade of green. The light blue chart, however, produced the highest [speed and] accuracy of charting and was more resistant to fatigue than green.
[Question and Answer contributed anonymously, and edited by Dr. Ogden Lindsley. September, 2000.] In the summer of 1967 Ogden Lindsley and his student Carl Koenig printed and tested out charts of various colours and discovered that blue worked best. As noted in Potts, Eshleman, & Cooper (1993), “the research team evaluated [charting speed], charting accuracy, charting fatigue, and color preference with charts printed in three shades each of red, orange, yellow, green, light blue, and light brown. Most charters preferred a shade of green. The light blue chart, however, produced the highest [speed and] accuracy of charting and was more resistant to fatigue than green. The chart has appeared in light blue ever since this evaluation.” (p.183) (Lindsley September 2000 comments added in [ ] brackets to to the quotation.
