| Summary: | 碩士 === 國立臺北教育大學 === 社會與區域發展學系碩士班 === 106 === Abstract
The percentage of delayed marriage or no marriage has increased year by year in recent years. According to the data released by National Institute of Population and Social Security Research, the percentage of the no- marriage men before 50 increased 3 % more than 2010. It hit the record high.
The study applied the data released by Statistics Japan in 1980, 2000 and 2015 to calculate and estimate the availability index to compare the mate selection opportunities for unmarried men and women. The researcher used the availability index as the calculationmula to estimate and explain the relative rationality of mate selection for the men and women in different age groups.
Research findings were as follows : (1) For the Japanese men of upper mate selection threshold, women older than men was accepted. And with the age was older, the gap was smaller. On the contrary, for the Japanese men of lower mate selection threshold tended to accept the younger women. For the Japanese women of upper mate selection threshold, men older than women was accepted. For the Japanese women of lower mate selection threshold, women older than men was also accepted. (2) The study showed that the best age of mate selection was 25 to 30 for women and 27 to 29 for men. The age was increasing with the changes of times both for men and women. (3) The single, unmarried women were prior than men. (4) The top of the availability index was broaden and delayed. It revealed that the chance of mate selection was smaller with the age increasing. (5) The availability index of Japanese women had rised again in recent years while the unmarried percentage of men and women of 50 had also increased. The study showed the percentage of unmarried men and women would be increased. The availability index for men was still lower than 100 and there was no significant change for the marriable value. So the researcher estimated the population structure was one of the mate selection factors. For the women of 40, the marriable value was still higher than 100 recently. So the researcher estimated it was not influenced by the population structure, maybe the other population factors or social factors.
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