Codes and Frequencies
For sample children age 3 and over who have had a language problem in the past 12 months that lasted one week or longer, CVAGELANG reports the age at which the child first began to have any language problems.
According to the Field Representative's Manual, language disorders are, "any of a number of problems with verbal communication and the ability to use or understand a symbol system for communication."
- 2012: Sample children 3+ who have had a language problem in the past 12 months for a week or longer
- 2012 : SAMPWEIGHT