Assertion: critical period | /r/AtLocation | close
Facets:
value: presumably
type: DEGREE
Source sentences:
text: Incorporating the idea, "younger equals better" by Penfield, David Singleton (1995) states that in learning a second language there are many exceptions, noting that five percent of adult bilinguals master a second language even though they begin learning it when they are well into adulthood—long after any critical period has presumably come to a close.