For instance , if an SLA researcher is studying L2 phonological development , they will likely conclude that the critical period ends at around age 3 .
These estimates tend to vary depending on what component of the language learning process a researcher considers .
If an SLA researcher is studying L2 phonological development , they will likely conclude that the critical period ends at around age 3 .
These estimates tend to vary depending on what component of the language learning process a researcher considers .