Guessing: Good or Bad?
Posted by Alex
Image source: www.e-a-rfit.com
Though people frequently think of mathematics as a summit of intellectual achievement of humankind, research reveals that some instinct about numbers, counting and mathematical ability is basic to almost all animals. For example, creatures that gather or hunt for food keep track of the approximate number of food items they procure in order to return to the places where they get the most sustenance. Humans share this very basic “number sense,” allowing them, at a glance, to estimate the number of people in a subway car or bus, Halberda says.
The students were flashed a group of yellow and blue dots, and had to estimate which colour group was bigger.
The Johns Hopkins team wondered whether this basic, seemingly innate number sense had any bearing on the formal mathematics that people study in school. So the researchers asked 64 14-year-olds to look at flashing groups of yellow and blue dots on a computer screen and estimate which dots were more numerous. Though most of the children easily arrived at the correct answer when there were (for example) only 10 blue dots and 25 yellow ones, some had difficulty when the number of dots in each set was closer together. Those results helped the researchers ascertain the accuracy of each child’s individual number sense. (You can test your own number sense on the New York Times website.)