Not the same actor...
I enjoyed Roger Ebert's reviews and I own several of his books on movies. But every now and then he'd just make a really silly mistake in a review. In a post I made mentioning afew recent instances, a commenter asked if Ebert was getting careless, or old before his time. The answer to that is 'no' - he's always done it.
Back in 1994, he wrote a profile on Tom Hanks, available in Awake in the Dark, in which he said
Look at him instead in Big, where in the early scenes he plays a pint-sized adolescent. (If you think this is easy, see how Martin Short handled it in Clifford.) He is at just that age when all of the girls in his class shoot up into Amazonia, while the boys remain short and squeaky-voiced. At an amusement part, he is in line next to the girl of his dreams, and hopes to sit next to her on a thrill ride, but the ride operator won't let him on board because he's too short. Hanks's face is a study in tragedy here; he portrays his humiliation so completely that it sets up the rest of the film, as his thirteen-year-old mind is magically transported into a thirty-year-old body, and he finds his true calling -- working for a toy company. His secret is that he is the only one at the company who really loves to play with the toys, and Hanks finds a childlike body language for shots like the one where he hops, skips, and jumps through the company's lobby.There's only one problem with this: Tom Hanks did not play Josh as a boy. That was David Moscow.