A 2006 study in Edinburgh, Scotland showed that 45% of the women participants in a speed-dating event and 22% of the men had come to a decision within the first 30 seconds.
A 2005 study at the University of Pennsylvania of multiple Hurry Date speed dating events found that most people made their choices within the first three seconds of meeting.
Furthermore, issues such as religion, previous marriages, and smoking habits were found to play much less of a role than expected.
While over 100 companies in the US offered speed dating through online registration during the growing of the Internet, between 20 three large speed dating companies emerged with a national footprint in the US, with events in over 50 US cities: Hurrydate, 8Minute Dating and Pre-Dating.
In the UK, there are two companies that run events in more than twenty cities: Speed Dater and Slow Dating.
On the other hand, a couple that decides they are incompatible early on will have to sit together for the duration of the round.
Most speed dating events match people at random, and participants will meet different "types" that they might not normally talk to in a club.
In a 2012 study, researchers found that activation of specific brain regions while viewing images of opposite-sex speed dating participants was predictive of whether or not a participant would later pursue or reject the viewed participants at an actual speed dating event.
Men and women made decisions in a similar manner which incorporated the physical attractiveness and likability of the viewed participants in their evaluation.
Speed Dating, as a single word, is a registered trademark of Aish Ha Torah.
Speed dating, as two separate words, is often used as a generic term for similar events.
Pre-Dating was acquired by Cupid.com, but eventually became independent again. The disadvantage is people do not actually meet one another.