About a year ago, Mom and I shared a dream… In BOTH our dreams, we rode a roller coaster named THE HORNET the track color was red on the outside rail, green on the inner crossbeams.
In both our dreams, we fell of the roller coaster to our deaths…
How did this happen?
Shared dreams haven’t been scientifically proven, but many people have claimed to have shared dreams and say that it is the result of subconscious minds communicating with each other and so on…
Personally however, I don’t believe in shared dreams as, after all, dreams are simply hallucinations taking place in our sleeping mind. The two seemingly identical dreams probably aren’t actually shared dreams, but one is a false memory and the other is the actual. Your mom could have told you about your dream, and you probably dreamt something about a roller-coaster. The dream your mom told you about could have triggered a false memory, in which the same details were added to your roller coaster dream. I’m not so sure if this information sinks in too easily… but hope it helped! 
it did… (i told mom, though…lol)
You can’t say that is true in every case … it is just your own personal opinion.
Something to ponder… 
magic Qwan- It’s only the personal opinion here.Cause, yeah, shared dreaming hasn’t been proven yet.But some people I know. have claimed to have shared dreams with someone.
I believe them, because I don’t think they would lie.Those are from the forum.If I had a shared dream, I’d be convinced it’s possible.If you really had that SD, ponder or doubt.
I sorta see what you mean… (All my dreams are strange…that is why I am trying to explore them…
Oops, I meant to say ‘‘DON’T ponder or doubt’’.
If it’s possible to think the same at the same time, I think it’s also possible to dream the same at the same time 
Could be coincidence could be shared dreaming…
I don’t know if shared dreaming is possible but I sure hope it is! That’s why I’m trying to have a shared dream with my brother. Because I believe some kind of telepathic powers should be possible, especially between family or people you know very well. I really hope it will work one day so that I can completely believe in it even though it is not scientifically proven (wouldn’t know how they would prove that anyway?)
Scientist try it…that’s how they prove it.
About that connection with the family- Well, seems that people actually don’t have more shared dreams with their family members than with other people.In fact, most of the people have them with their friends or other people.
I’ve shared few dreams with my girlfriend. They werent identical but quite alike. Once she dreamed she was hiding from aeroplanes in bomb attack. In my dreams I was throwing bombs out of the plane! 
I believe that if SD’ing is possible it can only be proven subjectively (by a password or just descriptions of the dreams). It might only be proven scientificly if two people can SD at will!
I also hope they are possible 
Good for you
My theory about shared dreams is quite simple… and expected from me, since I know a lot about computers.
Basically our brains communicate with each other, like a computer does in an MMO. You aren’t in the same place, much you’re in your own space, and brain communication is controlling the other person. Links usually last only a few seconds, which is why you had the same content, your brains traded information about the roller coaster, and bam.
I had a shared dream one time with my best friend about 2 years ago. The strange part was that we saw each other in the dreams and we were having the dreams in different points of view. We we kind of playing tag or something (She remembers tag, I remember running) in a field and across from the field was a big black creepy barn. There was some other stuff to… I actually illustrated the dream and she said that that was the same thing she saw.
I agree with this theory; the general subject of the dream can easily be influenced by external condition, thus it is likely to be the same if they want it so; as for communicating with the other dreamer on the way, there would be quite some ways:
This obviously only if they’re dreaming next to each other 
as for ‘separate rooms SD’, i don’t really know what to say, but i’ve still to hear a convincing story about such thing.
Even then, it will still be anecdotal. But, I shouldn’t dismiss something on the basis that it is anecdotal. Stephen Laberge had his eye movements to act as a window to cue a very internal process like lucid dreaming… shared dreamers have no such window.
I’ve heard quite a few convincing stories: Pantalimon designed and maintains a whole website from one experience, this guy was contacted by someone he’d never even met except in a dream, this has the most gripping and mindblowing detail (but comes off to me as a little over-concerned with not being judged as an occult practitioner. 
)
I’ve kept trying to initiate one myself, with no results. Don’t know how the Chroniclers have been doing.
the chroniclers havent been doing much
Sounds like an SD to me, but of course your brain can create false memories of dreams very easily, so you cant take these things for granted
Sharing dreams is not only possible… it’s all that we do.
What we all regards as “reality” is nothing but an enormous consensuated shared dream.
It’s not like “it’s all illusory” and nothing is real… all of us (or most of us) share a description of the world and that description narrows and distorts our perception.
That description is sustained by our internal dialogue. We talk ourselves out of lucidity all the time.
As for two people dreaming the same thing, it has happened to me many times. The problem is that most of us have too many dreams at the same time going on to notice.