S&R value is a Mystery method term (maybe others too? probably with roots in reproductive psycology) refering to the SURVIVAL and REPLICATING values of the partner/ target. The survival referes to being able to take care of oneself and/or offspring, while the replicating value referes to being able to replicate, or reproduce and pass on strong genes. meaning healthy, smart, strong, good looking. Girls tend to subconciously favor survival value(Abuility to earn, provide, intelligence), while guys tend subconciously value for Replicating,( Looks, body & health). They are fairly cohesive though and usually refered to as S&R value together... so it's best to work on both areas, butthe one you're lacking in a little harder!!