In one study, students took a cognitive performance test with their subject number written in ink on the first page. The experiment randomly varied the color of the ink. This subtle difference produced surprising results: Those who saw __________ ink performed worse on the test than those who saw __________ ink.
A) red; green or black
B) red or green; black
C) black; green or red
D) green; black or red

Question

Quizplus · Accepted Answer

Red ink is often associated with errors or warnings, which can induce a negative psychological effect, potentially impairing performance. Green and black inks do not carry the same negative connotations and may not affect or may even improve cognitive performance.

In One Study, Students Took a Cognitive Performance Test with Their