Harry Harlow is probably the most famous psychologist you've never heard of. Back in the 1960s, his work was widely covered in the press--and with good reason. Through a series of brilliant experiments, Harlow proved that love, despite what most of his colleagues believed, plays a crucial role in mental well-being. The idea that such a thing needed proving in the first place seems bizarre today. But as Deborah Blum explains in Love at Goon Park (Perseus; 336 pages), her thorough and beautifully written biography of Harlow, it made perfect sense in the context of mid--20th century psychology.
At the...