Why We Do the Things We Do

• 5-to-7-plus-or-minus-2
  procedures should have no more than nine steps
  bulleted lists should contain only five to seven items
      in There is an optimum number of steps

Remarks

This article doesn’t describe myths as much as it explains why they might play a larger than expected role in technical communication.

Source

Hayhoe, G. F. (2004). Why We Do the Things We Do. Technical Communication, 51(2), 181-182.