Balance | Symmetry

The middle child has many advantages.

He/ She will not be the centre of attention, hence the 'observer' instinct is honed. 

In contrast, there is too much attention on the eldest child who needs to be responsible and a good example to everybody; and the youngest child who is the 'baby' of the house.

He/ She would have learnt from the elder kids, hence not likely to repeat (or do) any dumb mistakes, because the elder ones have paved the path for him/ her.

I have noticed this recently: 

Child number 3 has 2 elder brothers 2 younger sisters

Hubby has 1 elder sister 1 elder brother 2 younger sisters 2 younger brothers

Incidentally Mr Ex has 1 elder brother 1 elder sister 1 younger sister 1 younger brother

What I have noticed about them? 

They are good with people, younger or older.

They make friends easily, and moves comfortably in a crowd.

They are good in persuading others and in negotiating terms.

They tend to maintain calm/ aim for harmony in tense situations.

Perhaps a coincidence, but I think being a middle child has something to do with it 😉