Space & Innovation

Trump's 'Big Hands': Does Size Matter?

The old wives' tale about hand size indicating penis size is a slippery question in many ways.

At last night's Republican debate, a new issue surfaced when candidate Donald J. Trump responded to Sen. Marco Rubio's previous remark about the size of certain body parts.

"And he referred to my hands: ‘If they're small, something else must be small.' I guarantee you there's no problem. I guarantee," Trump said.

Although news organizations have understandably decided to pass on fact-checking this claim, it does raise a scientific question: Is the size of a man's hands related to the size of his manhood? [8 Wild Facts About the Penis]

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There have been conflicting results about this question, said Debby Herbenick, a sex researcher at Indiana University.

Some studies have found a correlation between finger length and penis size, and others have not, Herbenick told Live Science. But these studies look at groups of people, not individuals, she said. Certainly, you'll find people with big hands and small penises, small hands and big penises, and every other combination in the real world, she said.

A 2011 study, for example, suggests that there may, in fact, be a link between hand size and penis size. The study, published in the Asian Journal of Andrology, found that the ratio between a man's index finger and ring finger was linked to penis size. Specifically, the researchers found that having mismatched index and ring fingers (meaning these two fingers are different lengths) was linked to having a longer penis.

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The association is not as out-of-left-field as it may seem. Some research suggests that testosterone exposure in the womb may play a role in both penis size and finger length, although more studies are needed to confirm this idea, the researchers said.

How big are we talking?

In a 2013 study, researchers found that the average American man's penis is 5.6 inches (14.2 centimeters) long when erect. But there's a great deal of variability. In the study, the researchers found that the shortest penis measured 1.5 inches (4 cm), while the longest measured 10.3 inches (26.2 cm).

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Given the range of sizes, it's no surprise that a European condom company, TheyFit LLC, set out to broaden the playing field in 2011 by offering an array of condoms in 95 different sizes.

But, as the age-old question goes, does size really matter?

According to a 2012 study in The Journal of Sexual Medicine, the answer is yes - well, for some women that is. In particular, women who have frequent vaginal orgasms are more likely than other women to say they climax more easily with men with larger penises, according to the study.

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"Male anxiety about penis size may not reflect internalized, culturally arbitrary masculine stereotypes but an accurate appreciation that size matters to many women," study researcher Stuart Brody, a psychologist at the University of the West of Scotland, told Live Science in 2012.

But men need not fret if they aren't well endowed. There's also a great deal of variability in women's size preferences, Barry Komisaruk, who researches female sexual response at Rutgers University, told Live Science at the time.

Another study, from 2013, found that penis size is a bigger factor for taller men. In the study, the researchers found that a larger penis had a greater effect on how attractive taller men were to women.

Of course, on the question of whether size matters for the Office of the President, well ... "whatever your genitals look like, it just doesn't matter," Herbenick said.

The 10 Most Surprising Sex Statistics Macho Man: 10 Wild Facts About His Body Hot Stuff? 10 Unusual Sexual Fixations Copyright 2016 LiveScience, a Purch company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Originally published on Live Science.

Now that the presidential primary races are tightening, some may be surprised that the current republican primary leader is a former reality television star (as well as a billionaire businessman). But if history shows us anything, it's that presidential candidates can come in many stripes and from many walks of life. The United States is, after all, a democracy. Anyone can run for president -- contingent on a few rules -- and that's resulted in some strange campaigns over the years. Steering clear of the jokesters, publicity seekers and wacky morning DJs who mount stunt campaigns, we take a look at five odd presidential candidates from U.S. history.

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In the history of U.S. presidential elections, hundreds of religious leaders have declared themselves as candidates, but very few have managed serious traction as legitimate contenders. Still, the All-Time Dogged Persistence Award goes to Homer A. Tomlinson, a New York City preacher who ran for the presidency in five straight elections, from 1952 until his death in 1968. Tomlinson was a former advertising professional, but his campaigns were more than extended publicity stunts. He founded his own political organization -- titled with admirable frankness as the Theocratic Party -- and issued serious platform statements. Well, serious to him, anyway: He wanted to replace taxation with tithing and advocated for a new cabinet post: Secretary of Righteousness. Tomlinson also had a pretty strong Plan B: When it became clear that he would not secure the presidency, Tomlinson declared himself King of the World and staged coronation ceremonies in 101 different countries, where he appeared with a gold-plated crown, an inflatable globe and a folding chair as his throne. It's important to travel light with these things.

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In 1872, entrepreneur and suffragette Victoria Woodhull became what many historians consider the first legitimate female candidate for the presidency. Running on a platform of women's rights and pro-labor issues, Woodhull secured the nomination of the Equal Rights Party, along with her running mate -- the famed abolitionist Frederick Douglass. Woodhull was a remarkable woman in many respects. Active in the fashionable spiritualist movement of the day, she also ran a Wall Street brokerage house and published a newspaper with original investigative reporting. In the paper, she advocated quite articulately for social policies that were decades ahead of their time, including sex education, vegetarianism and legalized prostitution. Woodhull also supported "free love" principles, which in that era meant the right to marry and divorce without government involvement or societal stigma: "Yes, I am a Free Lover," Woodhull wrote. "I have an inalienable, constitutional and natural right to love whom I may, to love as long or as short a period as I can; to change that love every day if I please, and with that right neither you nor any law you can frame have any right to interfere." Power, sister.

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As leader of the Communist Party USA through the 1930s and 1940s, Earl Browder was for a time the most public face of the communist movement in America. Born in Kansas, Browder was active in U.S. labor movements as a teenager and was jailed for resisting the draft during World War I. Browder was the official Communist Party candidate in 1936 and 1940. He's just one of many presidential candidates nominated by various U.S. communist groups in the 20th century, but Browder's position as a high-profile public figure had several intriguing aspects. It was an open secret that Browder worked directly with espionage agencies in Moscow, and several members of his family were known intelligence operatives for the Soviets. He was, in effect, a not-so-secret agent running for president. Browder also faced some practical impediments to assuming the presidency. At the time of his nomination in 1940, he was appealing a conviction for passport forgery, which carried a four-year stint in federal prison. That would have made for a tricky first term in office.

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A prominent name in U.S. politics in the early 19th century, Hugh Lawson White was a former Tennessee state supreme court justice and eventual U.S. senator. In an era of stern gentlemen, he was a particularly austere personality with hardcore constructionist views on judicial interpretation and states' rights. In the 1836 election, the emerging Whig party decided to try something a little different. Rather than back a single candidate, the party put forth multiple candidates, each of whom was to run a regional campaign, banking on their respective local popularity. White was one of four Whig candidates, along with William Henry Harrison, Willie Mangum and Daniel Webster. The idea was to win a majority in the Electoral College, then decide on the presidential ticket later. The Whig strategy didn't work, and it's maybe just as well. Had White been installed in the Oval Office, America would surely have had its most anal-retentive president ever. When he was serving in the Senate, White considered it his duty to attend every single Senate speech and meeting, and he was known to arrive at the Capitol building in the wee hours of the morning and stay late into the night. Punctuality was something of a passion for White, and his pocket watch is on display in a Tennessee museum.

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The candidate for whom the term "wingnut" was apparently invented, California congressman John G. Schmitz was the American Independent Party candidate for president in 1972. Infamous for his outrageous political rhetoric, Schmitz not only mounted a campaign to challenge incumbent Richard Nixon -- from the right -- he was eventually expelled from the John Birch Society for "extremism." Schmitz' third-party run was doomed from the start, but it was no joke. He got almost 10 percent of the vote in Idaho and finished ahead of Democratic nominee George McGovern in some counties. But Schmitz' crazybones quotes to the media have endured as his historical claim to fame. Of Nixon's trip to China, he famously said: "I have no objection to President Nixon going to China. I just object to his coming back." Schmitz also endorsed the return of segregated schools, called the Watts riots "a communist operation" and in the 1980s suggested that "

good military coup might be the best we could hope for if President Reagan's policies are not successful." Odd footnote: Schmitz' daughter is

Mary Kay Letourneau

.

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