Is writing in red pen rude?
Writing in red can be perceived as brash or loud.
What is the red pen effect?
The psychological impact of red
For example, one study by Rutchick et al says that a red pen will provide more corrections but fewer marks than those with neutral coloured pens. “People using red pens to correct essays marked more errors and awarded lower grades than people using blue pens,” noted the report summary.
Why do people use red pen?
That’s why we see stop signs and important notices in the colour red – the idea that it’s associated with danger grabs our attention in a way that other colours can’t. This also probably explains why it’s become associated with bad marks in the form of red pens – it denotes something urgent that needs attention.