Education: Dulling Effect

Many an educator's imagination has been tickled by the idea that radio would some day become the most powerful medium at his command. A few rash professors predicted that it would supplant lectures and textbooks in the colleges.

For such dreams a group of Harvard psychologists last week had some cold water. Experiments on both students and adults had convinced them of the superiority of the printed page as a medium of education. As between radio and lectures they found that: "Radio has a somewhat dulling effect on the higher mental processes of the...

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