In addition, when taking belongingness theory into account
(Baumeister & Leary, 1995) it can be expected that low Relation Quality
will have greater impact than normal or high Relation Quality. It seems
logical that as long as Relation Quality is at an intermediate level, the
impact of Relation Quality on happiness is moderate. However, when
something goes really wrong, it can be expected that a life domain will gain
obvious preponderance regarding happiness. Hence, it is expected that very
low quality of the relations with Partner (PR), Friends (FR) and Parents
(PT) may impact more on overall happiness than normal or high relation
quality in the sub domains based model.