Peter Gordon of Columbia University studied the Pirahã and found that they had great difficulty when asked to work with numerous objects. The Pirahã are by no means retarded, however: they have excellent capabilities in other areas such as spatial orientation and linguistics, and clearly understood the task they were asked to do. In this [...]

The musical children’s scores increased in all areas measured by the IQ test. Schellenberg suggests that this increase could be due to a combination of factors, including the well-known effect of simply being a part of structured lessons.

The extra schooling didn’t account for all of the increase, however; the drama group did not see the [...]