The Iris Center put out a great side-by-side comparison. I've attached it for you here.

Thank you so much for the comprehensive and clear details, Hope you the best  dear Caroline Papreck

Thanks for sharing that helpful chart Caroline

Very useful indeed ! Thank you !

Glad to help!

Great chart! A paper was also published in 2013 (attached) that compared DSM-4 to DSM-5 criteria on an ASD sample.

Thank you so much dear Sarah M Haigh, very useful article

Thank you everyone for all your helpful answers and comments, happy to see more answers and details, since I found many references strongly criticize DSM-5 criteria! 

Hi all, I am a new on here and have a particular interest in autism, the links that have been given in answer to Ahmad's question are helpful to me too, nice and simple. Thankyou

Hi,

Here is a paper by Lorna Wing on the differences which I found useful. I am also attaching a summary of the paper in lay terms. The summary s part of one of our monographs for families an practitioners which you can download from: www.port.ac.uk/autismresearchnetwork.

Beatriz