Study: NCT04253600

Intervention type: BEHAVIORAL
Group type: OTHER
Intervention: Risk profile screening questionnaire
Description: Families will be asked to complete a LimeSurvey questionnaire that aims at evaluating general risk profiles associated with DLD (e.g., no elevated risk, behavioral risk, environmental risk, familial risk), as well as our exclusion criteria (e.g., hearing deficit).

Intervention type: PROCEDURE
Group type: OTHER
Intervention: Investigation of the neural correlates of DLD using Magnetic Resonance Imagery (MRI)
Description: MRI data acquisition will take place during natural sleep in infants aged from 6 to 12 months. First, families will have to complete a security questionnaire to make sure that neither the children nor the accompanying parent have any known contraindication preventing the MRI session and that none of them is wearing any ferro-magnetic elements. Then, families will be welcomed in a calm and child-friendly environment where we will propose them some preparatory games known to facilitate sleep in children. MRI protocol will comprise structural and functional images and won't exceed 30 minutes.

Intervention type: BEHAVIORAL
Group type: OTHER
Intervention: Online investigation of predictive factors associated with DLD and LANCOM app development
Description: Parents will be asked to complete a series of online questionnaires every six months. Questionnaires will be created on LimeSurvey and will include different questionnaires, scales, and observations that aim at evaluating children's development, and especially language development, as well as parental and environmental characteristics.

Intervention type: BEHAVIORAL
Group type: OTHER
Intervention: Individual behavioral and cognitive assessment
Description: Individual cognitive and behavioral assessment will be scheduled once a year, around the child's birth date, and will comprise an extensive battery of standardized evaluation appropriate for the child's age. This individual evaluation will focus on several developmental aspects including language, psychomotor, behavioral and cognitive development, as well as executive and socio-emotional functioning, depending on the age of the children. Evaluations will be adapted to each child's specific profile, while respecting the following administration rules: (1) we will prioritize language development testing, (2) testing sessions will be adapted to each child's pace and possibilities, (3) if a child does not want to take part in the assessment, feels tired, or does not seem to be comfortable with the investigator, tests won't be administered.

Intervention type: BEHAVIORAL
Group type: OTHER
Intervention: Automated analysis of language development and environment
Description: Following the individual assessment, families will be asked to record their child's language environment over a 2-days' timeframe using the LENA® device, a small wearable device allowing for large-scale all-day audio recording and automated vocal analyses of speech segments. An automatic analysis of the recordings, performed by the LENA pro software algorithms, will provide amongst others, a direct and natural measure of the child's number of vocalizations, adult word counts, conversational turns, duration of exposure to electronic media versus to meaningful language. Data acquisition will take place once a year following our sample selection, with a required recording time per day ranging from 12 to 16 hours.