How can these Google searches track Islamophobia so well? Who searches for “I hate Muslims” anyway?

We often think of Google as a source from which we seek information directly, on topics like the weather, who won last night’s game or how to make apple pie. But sometimes we type our uncensored thoughts into Google, without much hope that Google will be able to help us. The search window can serve as a kind of confessional.

There are thousands of searches every year, for example, for “I hate my boss,” “people are annoying” and “I am drunk.” Google searches expressing moods, rather than looking for information, represent a tiny sample of everyone who is actually thinking those thoughts.

There are about 1,600 searches for “I hate my boss” every month in the United States. In a survey of American workers, half of the respondents said that they had left a job because they hated their boss; there are about 150 million workers in America.

In November, there were about 3,600 searches in the United States for “I hate Muslims” and about 2,400 for “kill Muslims.” We suspect these Islamophobic searches represent a similarly tiny fraction of those who had the same thoughts but didn’t drop them into Google.

“If someone is willing to say ‘I hate them’ or ‘they disgust me,’ we know that those emotions are as good a predictor of behavior as actual intent,” said Susan Fiske, a social psychologist at Princeton, pointing to 50 years of psychology research on anti-black bias. “If people are making expressive searches about Muslims, it’s likely to be tied to anti-Muslim hate crime.”

Google searches seem to suffer from selection bias: Instead of asking a random sample of Americans how they feel, you just get information from those who are motivated to search. But this restriction may actually help search data predict hate crimes.

“Public polls, properly done, describe what a representative sample of Americans believe and feel about an issue,” Paul Sniderman, a political scientist at Stanford, explained in an email. “Google searches answer a different question: What do people excited enough by an issue to comment on it think and believe about it? The answer to this question, just because it is unrepresentative of the public as a whole, may be a better bet to predict hate crimes.”