A BBC documentary investigated the Himba tribe of Namibia, whose language has more words for different shades of green than English does. The documentary concluded that having the words to describe different shades of green enabled the Himba to distinguish visually between shades that English speakers cannot distinguish.
A psychologist wanted to test whether English speakers can distinguish between the shades of green shown on the BBC programme. She created the chart below, in which three of the boxes have the same shade of green and one is different.
She enlisted 38 undergraduate students as subjects, each of For the record, the two shades have hex codes #50BA0F and #61C004.
The story about the documentary, and what we can and can’t conclude from it, is online here, with a followup here.
whom spoke only English. Each student was given 10 seconds to decide upon which box was shaded differently and record their answer. Sixteen of the students correctly identified the box that was different. Design a suitable test to decide whether English-speakers are able to distinguish the shades of green shown. Carry out the test and interpret your finding