Restricted Language--More Bang for your Buck
Restricted Language is also the language used in a family who subscribes to an authoritarian approach to child rearing.
For example, in a family where both parents work and there are several children, there is precious little time or energy to get things done in the few hours before and after work.
Efficiency is the key, so when dad or mom speak, children are supposed to hop-to. Crisp commands like "Turn it off! Eat quietly! Sit up! Brush your teeth! Stop yelling! Get dressed! Pick the toys up!!! Don't hit your sister!" keep things under control and get things done with a minimum expenditure of time and energy!
Notice that much is accomplished with supra segmental phonemes and body “language.” On the other hand there is a paucity of grammatical structures and transformational rules. That, of course, is what makes it so efficient.