Deadlier Than the Male intrigue when he comes to visit. The title is a reference to the 1911 Rudyard Kipling poem "The Female of the Species," which includes the line, "The female of the species must be deadlier than the male", and also refers to Sapper's earlier Drummond book, "The Female of the Species". The working title of the film was "The Female of the Species". "Deadlier Than the Male", the song featured in the film`s opening credit sequence, was performed by the Walker Brothers. Filmed in Technicolor and Techniscope, portions of the film were shot in Lerici, La Spezia, Liguria, Italy. A sequel,
Mental health among female offenders in the United States than their male counterparts. Women are also treated differently than men in prisons in regard to mental illness. Studies suggest "that female inmates' behaviour is more likely than males' to be 'psychiatrized' by correctional staff". One study shows that "role incongruence" effects how female and male inmates are treated. According to the study "female inmates who perpetrated acts of violence against others and/or property, or who demonstrated aggressiveness or agitation, were significantly more likely than men exhibiting similar behaviours to be placed in mental health units". Furthermore, the researchers found that men exhibiting "female psychiatric disorders (e.g., depression)" were more