Girl plays Pong while scientist observes her

I remember watching a movie on TV in the late 1970s or early 1980s. I think it was some sort of 1970s futuristic sci-fi film or horror film. It may have had English actors, or just the main scientist man was. He may have been a psychologist? The only scene I can remember is of a young girl, about 12, playing pong in a posh living room while the scientist/psychologist man observed her. Maybe she had ESP powers? I think the characters mostly wore tunics and the setting was meant to be futuristic. What was this movie??

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