|correlated with intelligence, the attention span is how long someone can concentrate on something. It is rapidly shortening; the Lincoln-Douglas debates 150 years ago lasted for hours, but none do today.<ref>http://www.help4teachers.com/ras.htm</ref> The average length of sentences in speech is another indication of attention span, and it has been shortening significantly. | |correlated with intelligence, the attention span is how long someone can concentrate on something. It is rapidly shortening; the Lincoln-Douglas debates 150 years ago lasted for hours, but none do today.<ref>http://www.help4teachers.com/ras.htm</ref> The average length of sentences in speech is another indication of attention span, and it has been shortening significantly. |