How’s your ability in voice perception?

Guess a person’s age from their voice. New Scientist. 

http://www.newscientist.com/embedded/voice-age-quiz

I tried the test but got no score or feedback about how I did compared to others who’ve done the test. I think I did well, with most age judgements within 10 years of the correct answer, a few, maybe 4 I guessed the ages within a year or two.

I maintain that there are some women who have voices that sound much younger than their age. They are unusual, but they do exist. There is an interesting collection of reasons why men can have voices that sound deeper and older than their years. Hormones probably influence how deep a man’s voice is, and this effect can be confused with the effects of age. There is a common belief that alcohol can have a temporary deepening effect on the vocal cords, giving a deeper tone the day after a big night. I think there’s something in this theory, but I’m not sure how much it is supported by hard evidence. The Uncyclopedia’s recipe for a rich bass voice describes a lifestyle that is not for everyone: “The diet of a bass consists of alcohol, cigarettes, more alcohol, fried meat products, children, ex girlfriends, yet more alcohol and even more cigarettes.” The late Jim Morrisson had a reputation as a hard drinker and had a singing voice well beyond his years. Till Lindemann has a brown-coloured monster of a voice, and a family background in which people hit the bottle hard. Genetics clearly plays a major role in vocal pitch, often displaying a pattern of inheritance. I have known one family in which both the father and sons from infancy onward all had markedly deep voices. An unusually hoarse voice can be caused by a genetic connective tissue or collagen disorder. Inhaling Sulphur Hexafluoride can deepen the voice temporarily, but that’s a pretty silly thing to do. Lots of things besides the ageing process can alter the sound of the voice, so reading age in the voice is not always a simple thing.

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