They then measured their gut reaction to each other using their intriguing "love test". This involved showing one partner a photograph of the other for a fleeting third of a second. They then had to answer as quickly as possible, whether certain words such as "great", "awesome", "horrible" and "scary" were positive or negative words. The speed with which they answered was an indication of their true feelings, say the researchers. The test is based on the psychological principle of association. The theory is that after fleetingly seeing a picture of their partner, the newlywed is in a positive or negative state of mind.

BBC News - 'Love-test' identifies newly-weds true feelings Sunday, December 1, 2013 @ 4:50pm