由柏納德( Jessie Bernard )的婚姻斜坡理論，本文假設婚配雙方的年齡及教育坡度 會影響女性在家庭中相對於丈夫之地位安排，因而影響其對生育的控制力。 採用第五次家庭與生育力調查的資料，本研究應用Logit線性模型的統計分析方法，探討婚姻的年齡及教育坡度對婦女生育控制力的影響，模型中並將婦女的年齡及教育程度變項本身列入分析以求控制。 研究發現：(1)婚姻年齡坡度確實影響女性的生育控制力，(2)婚姻的教育坡度單獨對生育控制力的影響作用並不顯著，但是它和女性教育程度的交互作用對生育控制力有顯著的影響，顯示女性教育程度等於或高於丈夫教育程度，會促使原本就較能控制生育的高教育女性更加具有高度的控制力。 本文建議進一步探討婚姻坡度的其他面向對生育控制力的作用，如職業地位及收入等，不過，這些面向和生育控制力在因果關係上比現在的研究具有複雜的本質，必須特別留意。

Bernard’s theory on marriage gradient introduces a hypothetical model in this paper that age and educational distances of marriage could affect the status of women relative to their spouses within family, hence would affect the fertility controllability for a woman. Adopting data from KAP survey, this study applies the logit-linear model for analyzing the effect of spouses’ age and educational distances on women’s fertility controllability. Both variables of women’s age and educational attainment are also included as controls. The findings are: (1)age distance factor do affect women’s fertility controllability significantly besides age factor itself.(2) the effect of educational distance alone is not supported, but its interaction effect with educational attainment is found significantly. This imples that a women's educational attainment being higher or equal compared to her husband’s strengthen women’s fertility controllability to their already strong one. Further studies regarding the effect of other aspects of marriage gradient such as occupational position and income are suggested. But their rather sophisticated nature of causal relationship with fertility controllability need more consideration.