TY  - JOUR
A1  - Wermke, Kathleen
A1  - Robb, Michael P.
A1  - Schulter, Philip J.
T1  - Melody complexity of infants’ cry and non-cry vocalisations increases across the first six months
T2  - Scientific Reports
N2  - In early infancy, melody provides the most salient prosodic element for language acquisition and there is huge evidence for infants’ precocious aptitudes for musical and speech melody perception. Yet, a lack of knowledge remains with respect to melody patterns of infants’ vocalisations. In a search for developmental regularities of cry and non-cry vocalisations and for building blocks of prosody (intonation) over the first 6 months of life, more than 67,500 melodies (fundamental frequency contours) of 277 healthy infants from monolingual German families were quantitatively analysed. Based on objective criteria, vocalisations with well-identifiable melodies were grouped into those exhibiting a simple (single-arc) or complex (multiple-arc) melody pattern. Longitudinal analysis using fractional polynomial multi-level mixed effects logistic regression models were applied to these patterns. A significant age (but not sex) dependent developmental pattern towards more complexity was demonstrated in both vocalisation types over the observation period. The theoretical concept of melody development (MD-Model) contends that melody complexification is an important building block on the path towards language. Recognition of this developmental process will considerably improve not only our understanding of early preparatory processes for language acquisition, but most importantly also allow for the creation of clinically robust risk markers for developmental language disorders.
KW  - fundamental frequency variation
KW  - language acquisition
KW  - newborn infants
KW  - speech discrimination
KW  - perception
KW  - intonation
KW  - term patterns
KW  - preterm
KW  - evolution
KW  - psychology
Y1  - 2021
UR  - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/25866
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-258669
SN  - 2045-2322
VL  - 11
IS  - 1
ER  -