Hazan and Schaffer were researchers who analysed 650 replies to a love quiz printed in a newspoper. The quiz assessed three aspects of a relationship which were the respondents current and most important relationship, general love experiences and attachment type. They found that 56% of the participants were securely attached, 25% were insecure avoidant and 19% were insecure resistant. This showed secure were most likely to have longer lasting romantic relationships, but avoidant tended to be jealous.