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The 2D:4D ratio is calculated by dividing the length of the index finger by the length of the ring finger of the same hand. Other digit ratios are also calculated similarly in the same hand. The digit length is typically measured on the palmar (ventral, "palm-side") hand, from the midpoint of the bottom crease to the tip of the finger. [8]
Researchers at McGill University in Canada examined the hands of 155 adult men and women, measuring the length of their ring fingers and pointer fingers. Man's finger length reveals how he treats ...
The difference in finger length is caused by the amount of testosterone and estrogen one receives in the womb. More testosterone means a shorter index finger compared to the ring finger, and more ...
Polykleitos may have used the distal phalanx of the little finger as the basic module for determining the proportions of the human body, scaling this length up repeatedly by √ 2 to obtain the ideal size of the other phalanges, the hand, forearm, and upper arm in turn. [20]
Finger is also the name of a longer unit of length, used historically in cloth measurement, to mean one eighth of a yard or 4 1 / 2 inches. [8] [10] (114.3 mm) Again, which finger and whose finger, is not defined. These units have no legal status but remain in use for 'rough and ready' comparisons.
The index finger (also referred to as forefinger, [1] first finger, [2] second finger, [3] pointer finger, trigger finger, digitus secundus, digitus II, and many other terms) is the second digit of a human hand. It is located between the thumb and the middle finger. It is usually the most dextrous and sensitive digit of the hand, though not the ...
The hand, sometimes also called a handbreadth or handsbreadth, is an anthropic unit, originally based on the breadth of a male human hand, either with or without the thumb, [2] or on the height of a clenched fist. [9] On surviving Ancient Egyptian cubit-rods, the royal cubit is divided into seven palms of four digits or fingers each. [10]
The pelvis is, in general, different between the human female and male skeleton. [12] [13] Although variations exist and there may be a degree of overlap between typically male or female traits, [12] [13] the pelvis is the most dimorphic bone of the human skeleton and is therefore likely to be accurate when using it to ascertain a person's sex ...