Before revision: Criticism Besides the common criticisms of self-help, Harvard psychologist Bella M. DePaulo has written books such as Singlism on the stigmatization of single people.
After revision: Criticism Besides the common criticisms of self-help, on singlism: What it is, why it matters and how to stop it and Singled Out psychologist Bella M. DePaulo has written books such as Singlism on the stigmatization of single people.