Is Attention Span The Secret of Raising IQ? Speed Reading Rules Scientists calculate the amount of time we can concentrate on a task without being distracted, disrupted, or bored, as our Attention-Span. Research indicates excessive TV and Web activity reduces A-S. Children from ages 6 to 12 exhaust their Attention-Span within 5 minutes. Adults appears to maintain A-S up to 20 minutes. Our eyes tend to shift from concentrating focus exclusively on one goal within 5 minutes; inter