Central route, high elaborators, detailed arguments, logical, leads to long lasting attitude and behaviour change.
Peripheral route, low elaborations, person sending message should be attractive (or celebrities) or an expert, temporary attitude change, high number of arguments which factor of behaviour changes.
Peripheral route gives the most info to enable people to understand why behaviour change needs to occur.
It is a realistic model which takes into consideration a persons motivation and desire to think about a message.