(Flege, Yeni-Komshian and Liu 1999; Bialystok, 1997)[22] The fact that many adults and older children can learn both first and second languages to a high degree of proficiency makes clear that unlike the kitten visual system studied by Hubel and Wiesel, the language acquisition system in humans is not subject to a critical period in the strict sense.
Our analysis revealed a number of compelling findings - including a clear link between English proficiency and key economic indicators like Gross National Income (GNI), Gross Domestic Product (GDP), and the Human Development Index (HDI).
These findings indicate a clear lack of opportunity and proficiency for children of color -- a lack that will greatly affect their future success in life.
Nevertheless, this was the first time that Cole was able to move the ball through the air with enough proficiency that it cleared the two-hundred-foot fence.
Mr. Longstreth bristles at the word technique, making it clear that as iconoclastic as Dirty Projectors might be, musical proficiency — or at least acknowledgment of it — is still something of a post-punk taboo.
Logbooks have traditionally acted as a surrogate marker of proficiency, however it is clear that the level of operative exposure required for proficiency will vary greatly amongst individuals.
While it is obvious that speech motor processes are involved in NW repetition, it is not clear how different levels of articulation proficiency affect the formation of phonological representations.
Still, there are some clear reasons why countries with strong English proficiency tend to thrive in the innovation sector.
But if schools are required, under threat of sanction, to raise their proficiency rates annually, it's fairly clear that they have a much greater incentive to switch to a more liberal interpretation of proficiency.
Current guidelines give clear specifications as to quality assurance, participation in proficiency testing and defined scoring systems [ 3, 5, 6].
Recent years have also brought language testers in China a much clearer understanding of the nature of L2 language proficiency and of the many different research approaches.
