Making Inferences
When you make an inference, you make a judgment based on clues in the reading. Making inferences is sometimes called "reading between the lines"
For example, the author writes, "Scientists say as many as one in every 200 people may be a synesthete." From this, we can infer that most people probably know at least one synesthete, whether they're aware of it or not, since most people know at least 200 people.