Inclusion Criteria for all children:
- Male or female
- Aged 9-10 years at inclusion
- French school curriculum (since 1st grade)
- Fully informed through the dedicated booklet
- Both parents gave their written consent
- Normal medical, neurological and brain imaging assessment
Inclusion criterion for non preterm children only:
- Full term pregnancy with no abnormal event (>= 37 weeks of amenorrhea)
Inclusion criterion for preterm children only:
- Delivery before 33 weeks of amenorrhea
Exclusion Criteria for all participants:
- Age over or under 9-10 years old at inclusion
- Monozygotic twins
- Restrictions to a Magnetic Resonance brain imaging exam: claustrophobia, metallic elements (cardiac implants, cochlear implants, metallic elements in the brain or the eyes and being close to the nervous system, metallic prothesis, braces), restless participants.
- Sudden cognitive impairments due to a stroke, head injury associated with loss of consciousness for more than one hour or encephalitis.
- Chronic neurological, psychiatric, infectious or liver condition, endocrine disruption.
- Past or current medical condition: cancer, diabetes, chronic lung condition, cardiac, metabolic, hematological, endocrine or immunological disorder.
- Medication assumed to interfere with brain imaging measures (psychotropics, hypnotics, anxiolytics, neuroleptics, benzodiazepine, steroidal anti-inflammatory, anti-epileptics, painkillers, muscle relaxants).
- Left-sided handedness
- Colour blindness or non-corrected visual disturbances
- Diagnosed developmental disorders
- Diagnosed cerebral palsy
- Diagnosed Fine motor disturbances
- Parents not affiliated to the Social Security
- Parents not able to join at each time of the study