A study from the Journal of Social Development has found that first born children tend to have a stronger relationship with their mums.
The study got a group of mums together and asked them to play with both their first and second born children.
The researchers monitored the behaviour of the kids and parents and found the firstborns showed more response to their mother. They also noted they also seemed to enjoy their playtime with mum more.
"Firstborn children may be more sociable and emotionally available to their mothers because they have the benefit of years of their parents’ undivided attention."
"Perhaps this concentrated time with mothers early on leads firstborn children to develop better social skills in relationships with adults."
Does this research reflect your family relationship?