Bias number 32 is known as the contrast effect. First observed by philosopher John Locke in the 17th century, this bias demonstrates how perception is determined by the individual’s pre-existing state.
Let’s take Mr. Locke as an example. He noticed that the experience of an object as hot or cold correlated with the temperature of his hand. If he soaked his hand in cold water, the object felt warm. If he soaked his hand in hot water, the object felt cold.
Click here to read the rest of the article.