Some of them said the study only confirmed what they had known for a long time from experience.

But a major study conducted in 1978 confirmed what experience had been teaching.

Almost a dozen studies over the last seven years have confirmed this.

But, she said, if other studies confirm the results, "I think you have to take it as a loss and move on."

A more detailed study later confirmed that this was not the case.

The study confirmed the higher rate, but failed to explain the reasons for it.

Later studies with better equipment have confirmed this brain size difference.

The large study essentially confirmed the results of the smaller one.

But, he added, clinical studies had not confirmed his findings.

The most recent study, published today, confirms two smaller ones that seemed too good to believe.