Babies’ love of baby talk is universal, Stanford-led study finds
Stanford psychologist Michael Frank and collaborators conducted the largest ever experimental study of baby talk and found that infants respond better to baby talk versus normal adult chatter.
Babies love baby talk all over the world, says Michael Frank, the Stanford psychologist behind the largest study to date looking at how infants from across the world respond to the different ways adults speak.
In the largest study of its kind, Stanford psychologist Michael Frank found that babies prefer it when adults “ooh” and “coo.” (Image credit: Getty Images)
The study, published March 16 in the journal Advances in Methods and Practices in Psychological Science, tested 2,329 babies from 16 countries on their preference for baby talk, the sing-songy, high-pitched way that adults often naturally talk to small children.
And the results are in: Little ones prefer it when grownups “ooh” and “coo.”
“Overall, babies from every site preferred baby talk,” said Frank, the David and Lucile Packard Professor of Human Biology in the School of Humanities and Sciences.
The researchers found that older babies preferred baby talk more than younger infants, and infants of all ages preferred baby talk when it was uttered in their native language – probably because that’s what they recognize, said Frank.
“Often parents are discouraged from using baby talk by well-meaning friends or even health professionals,” Frank said. “But the evidence suggests that it’s actually a great way to engage with your baby because babies just like it – it tells them, ‘This speech is meant for you!’”
Studying baby talk
While it was known from previous research that babies prefer baby talk over adult speech, Frank wanted to know whether this finding would vary across cultures and continents.
“Different cultures around the world baby talk more and less to their kids,” said Frank. “Do babies who hear less baby talk like it less or not at all?”
“The evidence suggests that [baby talk] is actually a great way to engage with your baby because babies just like it – it tells them, ‘This speech is meant for you!’ ”
—Michael Frank
Professor of Psychology
Often, however, researchers draw universal conclusions from studies at one university with only a few dozen babies. Frank didn’t want to fall into this trap. So, he thought bigger.
“We wanted to get labs together from around the world to test how similar or different babies’ preferences are across different environments,” Frank said.
Through the “ManyBabies” Project – an international research consortium Frank co-founded in 2015 – a team of 67 labs in North America, Europe, Australia and Asia were assembled (collaborations to test babies in Africa and South America are underway). The average age of infants in the study was about 9 months, with some as young as 3 months and as mature as 15 months.
Each lab followed the same experimental parameters, tested the same phenomena and used the same stimuli, specifically audio clips of other mothers speaking in baby talk to their infants and mothers talking normally to an adult in North American English.
Overall, the researchers found that babies preferred clips of mothers talking to their baby. The preference for this childish chit-chat was also stronger when the speech patterns matched an infants’ native language – showing that their prior exposure to baby talk at home mattered, said Frank.
“We think babies’ preferences probably come partly from their experience with baby talk at home, but also partly because more melodic speech just sounds nicer to them,” said Frank.
Coming together to solve research questions
While researchers all tested the same question with the same recordings, different labs did the procedure slightly differently. This gave Frank and his collaborators an opportunity to determine which method gave the best measurements.
For example, they found that one of the methods they used called the “head-turn preference procedure” – which trains babies to turn their head to one side to hear baby talk and the other side to hear adult talk – resulted in the most effective measurement.
“Findings like this one can really help other labs choosing their experimental method down the road, illustrating why it’s important to team up the way we did in this study,” said Frank.
Data collection was supported by a grant to the Association for Psychological Science from the Laura and John Arnold Foundation.
Individual participating labs further acknowledge funding support from the Natural Sciences and Engineering Research Council of Canada; a Social Sciences and Humanities Research Council of Canada Insight Grant; the UK Economic and Social Research Council; Agence Nationale de la Recherche; a European Research Council Synergy Grant, SOMICS; the Alvin V., Jr. and Nancy C. Baird Professorship; the Korean National Research Fund; the U.S. National Institutes of Health; Leibniz Science Campus Primate Cognition seed funds; The Science Academy, Turkey, Young Scientist Award Program, BAGEP; Research Manitoba, University of Manitoba; and Children’s Hospital Research Institute of Manitoba.
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