In a typical kitchen or bathroom you often find the hot and cold water taps labelled red and blue.
It’s common practice in industrial and interior design in many parts of the world to present information about temperature by means of colour cues. People often talk about painting a room in warm hues such as yellows and oranges.
This association of a colour with a temperature is known as “crossmodal correspondence” and has been known about for many years.
But why do we make these associations? Are they learned just because that’s the way hot and cold have always been labelled, or is there some deeper association?
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