Tim Page is a friend, and I’m in the acknowledgments of his acclaimed biography of the novelist Dawn Powell, which – you will not be surprised to hear – I love. So I can’t review his new Parallel Play: Growing Up With Undiagnosed Asperger’s (Doubleday, 196 pp., $26). But Janet Maslin writes in today’s New York Times that this “improbably lovely memoir” shows in “fascinatingly precise detail and often to pricelessly funny effect” what it’s like to have his autistic disorder and not know it. And nothing in her review conflicts with what I know about Tim, who won the Pulitzer Prize for his music criticism for the Washington Post before he decamped to academia. The Times has also posted an excerpt from Parallel Play, a book that is an expanded version of material that appeared in The New Yorker.