Relationship science, as a young developing science, needs to develop
a detailed empirical base. Various trends outside of the field are lik
ely to influence the field. We are probably going to see more biologic
al concepts and explanation, as well as more research on relationships
for people in retirement and in service-oriented employment. Relation
ship research will continue to employ quantitative and qualitative met
hods. Among the quantitative methods to be increasingly used are netwo
rk analysis, event history analysis and multilevel models.