手法を比較

	Relationship Assessment Scale (RAS)（関係評価尺度）	Dyadic Adjustment Scale (DAS)
分野	社会心理学	社会心理学
系統	Process / pipeline	Process / pipeline
提唱年	1988	1976
提唱者	Susan Hendrick (based on Sternberg's Triangular Theory of Love)	Graham B. Spanier
種類	Self-report questionnaire	Self-report questionnaire
原典	Sternberg, R. J. (1988). Triangulating love. In R. J. Sternberg & M. L. Barnes (Eds.), The psychology of love (pp. 119-138). New Haven, CT: Yale University Press.	Spanier, G. B. (1976). Measuring dyadic adjustment: New scales for assessing the quality of marriage and similar dyads. Journal of Marriage and the Family, 38(1), 15-28.
別名	RAS, Sternberg Relationship Assessment Scale	DAS, Spanier Dyadic Adjustment Scale
関連	3	3
概要	The Relationship Assessment Scale is a brief, widely used instrument for measuring global relationship satisfaction and quality in romantic partnerships. Developed by Susan Hendrick in 1988 and based on Robert Sternberg's Triangular Theory of Love, the RAS measures the three core components of love: intimacy (emotional closeness and connection), passion (attraction and desire), and commitment (dedication and decision to maintain the relationship). The RAS is valued for its brevity (7 items), applicability across diverse relationship types, and strong psychometric properties.	The Dyadic Adjustment Scale is the most widely used self-report instrument for measuring the quality of relationships in married or cohabiting couples. Developed by Graham Spanier in 1976, it captures four fundamental dimensions of relationship functioning: consensus (agreement on key domains), satisfaction (contentment in the partnership), cohesion (togetherness and shared activities), and affectional expression (intimacy and passion). The DAS has become a gold standard in couple therapy research, relationship satisfaction studies, and marital intervention trials.