We can all think of great sports rivals: tennis players Andre Agassi and Pete Sampras, basketball players Magic Johnson and Larry Bird or swimmers Michael Phelps and Ryan Lochte.
These fierce, personal rivalries seem worlds apart from a hometown 5K race. Yet even local races often produce rivals who push each other to higher levels of performance, according to new research that surveyed runners and used data from 184 races.
Rivalries are distinct from other competitions as those involved place higher stakes on their performance independent of any tangible outcomes. "Take the rivalry between Andre Agassi and Pete Sampras. They have held exhibition matches for charity in recent years, and despite the fact that both players have long been retired and that the outcomes of these matches carry no financial stakes, they are fiercely competitive with each other," says Gavin Kilduff of New York University's (NYU) Stern School of Business. "I would argue that this is due to the longstanding rivalry relationship between these two, which encompasses their long history of competing against each other."
In his new study published today in Social Psychological and Personality Science, Kilduff took two approaches to studying rivalries: First, he surveyed people online about their feelings toward rivals, as well as characteristics of the rivalries. Then, he analyzed results from 184 races over a 6-year time period in a U.S. running club to try to identify rivalries and to match them to changes in performance over time. The races ranged from 3 to 21 kilometers, but most were 5K runs.
Runners who Kilduff surveyed reported having about three rivals on average. "I think some people may find it surprising that runners actually pick one and another out at these kind of races but my experiences speaking with them suggests they indeed do," he says. Also without prompting, these runners reported that rivalry motivated them to train and race harder and faster.
Online survey data also revealed several factors that lead to rivalry: similarity (e.g. age and gender), repeated competition, and closely-decided contests. Using these factors, Kilduff identified pairs of rivals in three years of race data - matching up people who were similar, had run many races together, and who had finished with similar race times. He then looked at the subsequent three years of race data to see how the performance of these pairs changed over time.
Kilduff found that runners ran faster in the races featuring their rivals. While past research had identified similarity between competitors as a potential motivating factor, the work is novel in showing that results of past contests can make people more motivated in future ones.
"How we behave in competition situations depends on our relationship and history of interaction with our opponent," Kilduff says. "This suggests that we may be able to boost our own levels of motivation and performance by either forming rivalries or harnessing the ones we already have. It might also get us to think about whether other individuals in our lives may view us as their rivals."
Kilduff does offer some caution in approaching rivalries, noting other research that suggests that people may act more unethically or engage in more risky behaviors if it means outperforming a rival. But, he notes that rivalries may have other unexplored benefits, such as promoting greater commitment and loyalty within groups (think of famous group rivalries: Yankees/Red Sox, Michigan/Ohio State). And he and NYU doctoral student Jeff Thomas are also exploring whether rivals may actually, under the right conditions, be more likely to cooperate with each other than non-rival competitors, due to a sense of shared identity.