Audun Rørvik Rosslund

About

I am an associate professor of developmental psychology at the Department of Psychology, NTNU. My research primarily focuses on language development in infants and toddlers, with a particular emphasis on the mechanisms that drive language acquisition, the role of environmental factors in shaping language development, and the design of effective tools for early language assessment.

Recently, I have focused on associations between early vocabulary and various aspects of children's home environments, such as siblings, screen time, shared book reading, pacifier use, and acoustic features of parents’ speech (infant-directed speech).

I use a range of methodological approaches in my work, including eye-tracking and pupillometry, touch-based methods, questionnaires, and acoustic analyses of parent–child interaction. I am committed to Open Science practices, and involved in the ManyBabies consortium, a global multi-lab collaboration that promotes replicability and generalisability in developmental psychology.

Publications

Registered Reports (Stage 1)

The ManyBabies Consortium (accepted pending data collection). ManyBabies 5: A large-scale investigation of the proposed shift from familiarity preference to novelty preference in infant looking time. Nature Human Behaviour.
Laeng, B., Mayor, J., Rosslund, A., & Kartushina, N. (accepted pending data collection). Pupillary response to a brightness illusion in infants. Collabra: Psychology.
Serres, N., Mayor, J., Rosslund, A., & Kartushina, N., (accepted pending data collection). The role of dialect variability on mispronunciation sensitivity: An insight to infants’ early language development from a Norwegian context. Infancy.
The ManyBabies Consortium (accepted pending data collection). ManyBabies 3: A multi-lab study of infant algebraic rule learning. Developmental Science.
The ManyBabies Consortium (accepted pending data collection). Action anticipation based on an agent’s epistemic state in toddlers and adults. Child Development.

2025

Rosslund, Audun. (2025) Learning words in context. Nature Reviews Psychology
Academic article
Rosslund, Audun; Mayor, Julien; Kartushina, Natalia. (2025) Norwegian parents do not modulate infant-directed speech based on their infants’ attributed word knowledge. Developmental Psychology
Academic article
Rosslund, Audun; Kartushina, Natalia; Serres, Nora Rose; Mayor, Julien. (2025) Early Vocabulary Acquisition: From Birth Order Effect to Child-to-Caregiver Ratio. Child Development
Academic article
Rosslund, Audun; Varjola, Nina; Mayor, Julien; Kartushina, Natalia. (2025) Longitudinal changes in consonant production in infant-directed speech and infants’ early speech production from 6 to 12 months. Infant Behavior and Development
Academic article

2024

Rosslund, Audun; Mayor, Julien; Cristia, Alejandrina; Kartushina, Natalia. (2024) Native and non-native vowel discrimination in 6-month-old Norwegian infants. Infant Behavior and Development
Academic article
Rosslund, Audun; Kartushina, Natalia; Mayor, Julien. (2024) Associations between shared book reading, daily screen time and infants' vocabulary size. Journal of Child Language
Academic article
Rosslund, Audun; Mayor, Julien; Mundry, Roger; Singh, Arun Prakash; Cristia, Alejandrina; Kartushina, Natalia. (2024) A longitudinal investigation of the acoustic properties of infant-directed speech from 6 to 18 months. Royal Society Open Science
Academic article

2023

Rosslund, Audun; Hagelund, Silje; Mayor, Julien; Kartushina, Natalia. (2023) Mothers' and fathers' infant-directed speech have similar acoustic properties, but these are not associated with direct or indirect measures of word comprehension in 8-month-old infants. Journal of Child Language
Academic article
Rosslund, Audun. (2023) Stemmen din kan påvirke barnas språkutvikling. Første steg
Article in business/trade/industry journal

2022

Rosslund, Audun; Mayor, Julien; Kartushina, Natalia. (2022) Barns ordforråd skjøt fart når barnehagene stengte ned under pandemien. Første steg
Article in business/trade/industry journal
Rosslund, Audun; Mayor, Julien; Óturai, Gabriella; Kartushina, Natalia. (2022) Parents’ hyper-pitch and low vowel category variability in infant-directed speech are associated with 18-month-old toddlers’ expressive vocabulary. Language Development Research
Academic article

2021

Lo, Chang Huan; Rosslund, Audun; Chai, Jun Ho; Mayor, Julien; Kartushina, Natalia. (2021) Tablet assessment of word comprehension reveals coarse word representations in 18–⁠20‐month‐old toddlers. Infancy
Academic article
Kartushina, Natalia; Rosslund, Audun; Mayor, Julien. (2021) Toddlers raised in multi-dialectal families learn words better in accented speech than those raised in monodialectal families. Journal of Child Language
Academic article

Journal publications

Rosslund, Audun. (2025) Learning words in context. Nature Reviews Psychology
Academic article
Rosslund, Audun; Mayor, Julien; Kartushina, Natalia. (2025) Norwegian parents do not modulate infant-directed speech based on their infants’ attributed word knowledge. Developmental Psychology
Academic article
Rosslund, Audun; Kartushina, Natalia; Serres, Nora Rose; Mayor, Julien. (2025) Early Vocabulary Acquisition: From Birth Order Effect to Child-to-Caregiver Ratio. Child Development
Academic article
Rosslund, Audun; Varjola, Nina; Mayor, Julien; Kartushina, Natalia. (2025) Longitudinal changes in consonant production in infant-directed speech and infants’ early speech production from 6 to 12 months. Infant Behavior and Development
Academic article
Rosslund, Audun; Mayor, Julien; Cristia, Alejandrina; Kartushina, Natalia. (2024) Native and non-native vowel discrimination in 6-month-old Norwegian infants. Infant Behavior and Development
Academic article
Rosslund, Audun; Kartushina, Natalia; Mayor, Julien. (2024) Associations between shared book reading, daily screen time and infants' vocabulary size. Journal of Child Language
Academic article
Rosslund, Audun; Mayor, Julien; Mundry, Roger; Singh, Arun Prakash; Cristia, Alejandrina; Kartushina, Natalia. (2024) A longitudinal investigation of the acoustic properties of infant-directed speech from 6 to 18 months. Royal Society Open Science
Academic article
Rosslund, Audun; Hagelund, Silje; Mayor, Julien; Kartushina, Natalia. (2023) Mothers' and fathers' infant-directed speech have similar acoustic properties, but these are not associated with direct or indirect measures of word comprehension in 8-month-old infants. Journal of Child Language
Academic article
Rosslund, Audun. (2023) Stemmen din kan påvirke barnas språkutvikling. Første steg
Article in business/trade/industry journal
Rosslund, Audun; Mayor, Julien; Kartushina, Natalia. (2022) Barns ordforråd skjøt fart når barnehagene stengte ned under pandemien. Første steg
Article in business/trade/industry journal
Rosslund, Audun; Mayor, Julien; Óturai, Gabriella; Kartushina, Natalia. (2022) Parents’ hyper-pitch and low vowel category variability in infant-directed speech are associated with 18-month-old toddlers’ expressive vocabulary. Language Development Research
Academic article
Lo, Chang Huan; Rosslund, Audun; Chai, Jun Ho; Mayor, Julien; Kartushina, Natalia. (2021) Tablet assessment of word comprehension reveals coarse word representations in 18–⁠20‐month‐old toddlers. Infancy
Academic article
Kartushina, Natalia; Rosslund, Audun; Mayor, Julien. (2021) Toddlers raised in multi-dialectal families learn words better in accented speech than those raised in monodialectal families. Journal of Child Language
Academic article

Teaching

Courses

Outreach