A background check or background investigation is the process of looking up and compiling criminal records, commercial records and financial records of an individual or an organization. Contents.
The environment a child develops in has influences on language development. The environment provides language input for the child to process. Speech by adults to children help provide the child with correct language usage repetitively.
As children get older their rate of vocabulary growth increases. Children probably understand their first 50 words before they produce them. By the age of eighteen months, children typically attain a vocabulary of 50 words in production, and between two to three times greater in comprehension.