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Joint Attention Is A Social Skill Children Pick Up Early
The findings, suggests that the human brain develops this important social skill surprisingly early in infancy.
Joint attention - where two people share attention to the same object - is a vital human social skill necessary for many types of human behaviour such as teaching, collaboration, and language learning. Impairments in this skill are one of the earliest signs of autism.
Dr Tobias Grossmann and Professor Mark Johnson from Birkbeck, University of London, used a technique known as 'near infrared spectroscopy' (NIRS) to examine which areas of an infant's brain are activated when paying joint attention to an object.
NIRS, an optical brain imaging technique, which involves measuring the blood flow associated with brain activation, is well suited to study freely behaving infants.
With this non-invasive technique, near-infrared light travels from sources on a sensor pad located on the head, through the skin, skull and underlying brain tissue, and is then detected by sensitive detectors on the same sensor pad.
In the experiment, conducted in Birkbeck's Babylab, the babies were shown the computer-animated image of an adult's face.
The adult would make eye contact with the baby, raise her eyebrows and smile, glance towards an object at her side, back to the baby and then finally turn her head to face the object. In the control conditions, the adult would look away from the object or would look at the object without making eye contact with the baby.
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