evaluation of critical period classic studies

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1. Which lists of studies support the critical period?

  • Johnson & Newport (1989), Birdsong & Malis (2001), Abrahamson (2012)
  • Johnson & Newport (1989), Abrahamson (2012) , White & Genessee (1996)
  • Johnson & Newport (1989), Abrahamson (2012), DeKayser (2000)
  • Johnson & Newport (1989), Hakuta et al (2003), DeKayser (2000)
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2. How did Abrahamson (2012) measure phonetics?

  • categorical perception of listening onset time (LOT)
  • categorical perception of voice onset time (VOT)
  • numerical perception of voice onset time (VOT)
  • numerical perception of listening onset time (LOT)

3. What age effects did White & Genessee (1996) study find?

  • early learners (≤ 7) = 75% achieved near-native performance. 1/3 adults reached near-native performance
  • early learners (≤ 7) = 60% achieved near-native performance. 1/3 adults reached near-native performance
  • early learners (≤ 7) = 60% achieved near-native performance. 2/3 adults reached near-native performance
  • early learners (≤ 7) = 75% achieved near-native performance. 2/3 adults reached near-native performance

4. What did Johnson & Newport (1989) study find?

  • Negative correlation between AoA and language performance. Weak correlation ≤ 16 years. No correlation ≥ 16 years
  • Negative correlation between AoA and language performance. Strong correlation ≤ 16 years. Weak correlation ≥ 16 years
  • Negative correlation between AoA and language performance. Strong correlation ≤ 16 years. No correlation ≥ 16 years
  • Positive correlation between AoA and language performance. Strong correlation ≤ 16 years. No correlation ≥ 16 years

5. What did White & Genessee (1996) study find?

  • significant evidence for maturational decline
  • no evidence for maturational decline
  • slight evidence for maturational decline
  • evidence for maturational decline

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