Women ‘switching sides’ – or crossing sexual boundaries – relatively late in life has been in the public eye more than ever recently. Lisa Diamond, associate professor of psychology and gender studies, has spent decades studying sexual fluidity and confirms that this common assumption that all late-life lesbians must have been in the closet is not correct. ‘Maybe we prefer that explanation because the alternative is too scary for some people,’ she says. ‘It might mean that none of us knows our sexuality as much as we think. Maybe we, too, could suddenly be surprised.’ Read more.