My brother and I fought like typical siblings. After an afternoon of playing we would need alone time and naturally an argument would occur. My brother still holds some deep-seated resentment about these events, and I recognize having a younger sister was somewhat traumatizing for him.
Over thirty years later, I am parenting an older boy and younger girl, with a similar gap in age. Their arguments are familiar and often remind me of my childhood. This past weekend I had an opportunity to catalog a series of arguments and learned a few things about how my children relate to one another (and how I respond).
Sharing does not come naturally, unless you have more than your sibling. In that case, you are more than willing to share what is leftover and feel rather noble about your charity. This often reminds me of some work situations.
My response the first time this happened was to calmly offer, “we share equally.” After the fifth incident Saturday morning, even the neighbors heard be shout, “WE SHARE EQUALLY!”