AP photo: Eden Sawczenko reacts to 'Kaspar' the robot who is showing the 'Happy' stance of two open arms.

Eden Sawczenko used to recoil when other little girls held her hand and turned stiff when they hugged her. This year, the 4-year-old autistic girl began playing with a robot that teaches about emotions and physical contact–and now she hugs everyone.

“She’s a lot more affectionate with her friends now and will even initiate the embrace,” said Claire Sawczenko, Eden’s mother.

The girl attends a pre-school for autistic children in Stevenage, north of London, where researchers bring in a human-looking, child-sized robot once a week for a supervised session. The children, whose autism ranges from mild to severe, play with the robot for up to 10 minutes alongside a scientist who controls the robot with a remote control.

The robot, named Kaspar, is programmed to do things like smile, frown, laugh, blink and wave his arms. He has shaggy black hair, a baseball cap, a few wires protruding from his neck, and striped red socks. He was built by scientists at the University of Hertfordshire at a cost of about 1,300 pounds (US $2,118).

There are several versions of Kaspar, including one advanced enough to play Nintendo Wii. The robot’s still in the experimental stage, and researchers hope he could be mass-produced one day for a few hundred dollars.

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“Children with autism don’t react well to people because they don’t understand facial expressions,” said Ben Robins, a senior research fellow in computer science at the University of Hertfordshire who specializes in working with autistic children.

“Robots are much safer for them because there’s less for them to interpret and they are very predictable.”