Because the matching itself happens after the event, people do not feel pressured to select or reject each other in person.
On the other hand, feedback and gratification are delayed as participants must wait a day or two for their results to come in.
Most speed dating events match people at random, and participants will meet different "types" that they might not normally talk to in a club.
On the other hand, the random matching precludes the various cues, such as eye contact, that people use in bars to preselect each other before chatting them up.
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.
Requirement for each event vary with the organizer.
Specific age range based on gender is a common restriction for events.
According to the New York Times, participants in speed dating experience an average of 2 in 10 or 3 in 10 matches.
Online dating participants, in contrast, only find a compatible match with 1 in 100 or fewer of the profiles they study.
The first speed-dating event took place at Peet’s Café in Beverly Hills in late 1998.