London: The heavier a man`s voice is the
stronger he is physically, says a new study.
The University of California study found that a man`s
voice is an indicator of his upper body strength.
The researchers collected voice recordings and body
measurements from more than 360 people from around the world.
The recordings were then played to more than 200 US
students who were asked to rate each person`s strength on a
They found that after listening to the recordings, the
volunteers could accurately predict the strength of the men,
based on a seven-point scale from weak to strong, regardless
of the language used.
Although both sexes give clues to their strength every
time they open their mouths, male voices are much easier to
judge than female ones, the researchers found, the Daily Mail
Lead research Dr Aaron Sell of the University of
California said the ability to assess strength from voices
"evolved to help our ancestors avoid picking fights they were
likely to lose".
He said: "Both men and women were equally accurate at
assessing strength in the voice."
It makes evolutionary sense for people to be better at
predicting a man`s strength than a woman`s, because "most of
the physical aggression is caused by males", he said, adding
that "it may also have helped women select strong mates".
The researchers said although the deepness of a voice is
not an accurate guide to whether someone is muscular or weedy,
people rely on a subconscious, mysterious `x-factor` in the
voice to work out someone`s physique.
The research is reported in the Proceedings of the Royal
Society B journal. ]