This research investigates how early learning about native language
sound structure affects how infants associate sounds with
meanings during word learning. Infants (19-month-olds) were presented
with bisyllabic labels with high or low phonotactic probability
(i.e., sequences of frequent or infrequent phonemes in
English). The labels were produced with the predominant English
trochaic (strong/weak) stress pattern or the less common iambic
(weak/strong) pattern. Using the habituation-based Switch Task
to test label learning, we found that infants readily learned high
probability trochaic labels. However, they failed to learn low probability
labels, regardless of stress, and failed to learn iambic labels,
regardless of phonotactics. Thus, infants required support from
both common phoneme sequences and a common stress pattern
to map the labels to objects. These findings demonstrate that early
word learning is shaped by prior knowledge of native language
phonological regularities and provide support for the role of statistical
learning in language acquisition.
This research investigates how early learning about native languagesound structure affects how infants associate sounds withmeanings during word learning. Infants (19-month-olds) were presentedwith bisyllabic labels with high or low phonotactic probability(i.e., sequences of frequent or infrequent phonemes inEnglish). The labels were produced with the predominant Englishtrochaic (strong/weak) stress pattern or the less common iambic(weak/strong) pattern. Using the habituation-based Switch Taskto test label learning, we found that infants readily learned highprobability trochaic labels. However, they failed to learn low probabilitylabels, regardless of stress, and failed to learn iambic labels,regardless of phonotactics. Thus, infants required support fromboth common phoneme sequences and a common stress patternto map the labels to objects. These findings demonstrate that earlyword learning is shaped by prior knowledge of native languagephonological regularities and provide support for the role of statisticallearning in language acquisition.
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