article_snippet: Dr Sigman, a specialist who advises schools, will address a closed gathering of PSHE teachers as part of a HMC Headmasters' and Headmistresses' Conference professional development programme.
article_snippet: Dr Sigman, a chartered biologist and chartered psychologist, worked on health education campaigns with the Department of Health.
article_snippet: Last year, Dr Sigman, a chartered biologist and chartered psychologist argued that even television news was damaging to young girls because the news readers were 'on a permanent diet'.