To you, it's a temper tantrum. To child psychiatrist Robert Shaw, it's the beginning of a slide into perdition. And it's all the parents' fault. Joanna Moorhead reports.
The life of a sex writer is not an easy ride. As Emma Taylor and Lorelei Sharkey - authors of The Big Bang, the new Joy of Sex - know all too personally. Theory is one thing, but practice can often be far more perverse.
A new book has rekindled old rumours that renowned psychologist BF Skinner used his baby daughter in his experiments. Stop this rubbish about me and my dad, says Deborah Skinner Buzan.
The Nazis were by no means the only advocates of racial purification. In this extract from his extraordinary new book, Edwin Black describes how Adolf Hitler's race hatred was underpinned by the work of American eugenicists.