Anita started to talk at 9 months and was speaking fluently by the time she was 1 year old; she crawled at 13 months and was walking at 15 months. Xenia started to talk at 14 months and was speaking fluently just after her second birthday; she crawled at 10 months and was walking by her first birthday. One theory of childhood amnesia might predict that will have memories from an earlier age because of her .

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true. b) some other scientific experts read the papers and provide quality control by eliminating many mistakes. c) an editor reads the papers, to make sure that all the semicolons are in the correct places. d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog. e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.