@article{FuhrmeisterSmithMyers2020,
  author    = {Fuhrmeister, Pamela and Smith, Garrett and Myers, Emily B.},
  title     = {Overlearning of non-native speech sounds does not result in superior consolidation after a period of sleep},
  series = {The journal of the Acoustical Society of America},
  volume    = {147},
  journal   = {The journal of the Acoustical Society of America},
  number    = {3},
  publisher = {American Institute of Physics},
  address   = {Melville},
  issn      = {0001-4966},
  doi       = {10.1121/10.0000943},
  pages     = {EL289 -- EL294},
  year      = {2020},
  abstract  = {Recent studies suggest that sleep-mediated consolidation processes help adults learn non-native speech sounds. However, overnight improvement was not seen when participants learned in the morning, perhaps resulting from native-language interference. The current study trained participants to perceive the Hindi dental/retroflex contrast in the morning and tested whether increased training can lead to overnight improvement. Results showed overnight effects regardless of training amount. In contrast to previous studies, participants in this study heard sounds in limited contexts (i.e., one talker and one vowel context), corroborating other findings, suggesting that overnight improvement is seen in non-native phonetic learning when variability is limited.},
  language  = {en}
}
@article{HeffnerFuhrmeisterLuthraetal.2022,
  author    = {Heffner, Christopher C. and Fuhrmeister, Pamela and Luthra, Sahil and Mechtenberg, Hannah and Saltzman, David and Myers, Emily B.},
  title     = {Reliability and validity for perceptual flexibility in speech},
  series = {Brain and language : a journal of clinical, experimental and theoretical research},
  volume    = {226},
  journal   = {Brain and language : a journal of clinical, experimental and theoretical research},
  publisher = {Elsevier},
  address   = {Amsterdam [u.a.]},
  issn      = {0093-934X},
  doi       = {10.1016/j.bandl.2021.105070},
  pages     = {11},
  year      = {2022},
  abstract  = {The study of perceptual flexibility in speech depends on a variety of tasks that feature a large degree of variability between participants. Of critical interest is whether measures are consistent within an individual or across stimulus contexts. This is particularly key for individual difference designs that are deployed to examine the neural basis or clinical consequences of perceptual flexibility. In the present set of experiments, we assess the split-half reliability and construct validity of five measures of perceptual flexibility: three of learning in a native language context (e.g., understanding someone with a foreign accent) and two of learning in a non-native context (e.g., learning to categorize non-native speech sounds). We find that most of these tasks show an appreciable level of split-half reliability, although construct validity was sometimes weak. This provides good evidence for reliability for these tasks, while highlighting possible upper limits on expected effect sizes involving each measure.},
  language  = {en}
}