Production deficiency is a stage in recall strategy that is common to most children. It is exhibited by children who can use strategies for remembering that they have been taught by others but cannot produce strategies on their own. Children usually overcome this deficiency during elementary school age and are able to use recall strategies that they develop themselves. When children still have a production deficiency they can use recall strategies that other people (such as teachers and parents) have taught them. Eventually they learn how to use and develop memory strategies or "tricks" on their own.