Didn't see

[NAB3]

DS1, age 6, lying on the floor crying "DD pushed me"
Me "Did you?"
DD shakes head.
DS1 "She's lying"
What do you do about discipline when you didn't see and both have been caught out in a lie before?

i shout "I DONT CARE!! ITS SO BORING! NOW WILL YOU BOTH SHUT THE HELL UP!!"

probably not in the miriam stoppard book of great parenting, mind.

if this happens alot and they are both as bad as eachother just punish them both or don't give sympathy to the one who has been hurt and hopefully they will soon realise they neither gets anything out of the situation. its all about attention and getting on over on eachother but if you ignore them both or punish them both then neither wins

We do tend to just ignore it or say something to both but I would hate the innocent party to feel badly done too. At the minute it seems to be either playing together really nicely or arguing, which is most of the time.

I would say "since you can't play nicely together you will have to play separately" and split them up - hmm - that rings a bell - have just said it to my lot - actually I yelled it at my lot - but maybe that isn't to be recommended.

We have tried that too, and then after a while they are begging to play together again.

I was harsh and unfair most of the time.
And had a zero tolerance stance on any physical aggression between them.
I used to send them to separate rooms until they could play nicely together.
And then they would stand at their bedroom doors and moan about me, and commiserate with each other for having such a horrible mother, and suddenly become the best of friends again.

It is more emotional and vocal than physical. If they get physical it is easier to deal with somehow.
currently playing quite nicely, even if DS1 is being a tad bossy.

I tell them all off which is their cue to gang up against me (like I care!) and peace is restored