According to theory, which is supported by research, if children are deprived of the opportunity to learn language in the years before __________, it will be very difficult if not impossible for them to ever master the rules of grammar

The percentage of children with hearing impairments has remained stable over the past 20 years

Indicate whether this statement is true or false.

The lowest level of a stimulus needed for the nervous system to detect a change half the time is called the ___________

A) difference threshold B) just noticeable difference C) sensory adaptation D) absolute threshold