Relethford J H, Mielke J H
State University of New York College at Oneonta.
Ann Hum Biol. 1994 Jan-Feb;21(1):13-21. doi: 10.1080/03014469400003042.
Marriage records from 1750 through 1949 were used to examine effects of population size, geographic distance, and temporal change on rates of marital exogamy in the Aland Islands, Finland. Exogamy rates for individuals (not couples) were computed for 15 Aland parishes in each of four 50-year time periods, giving a total of 60 observations. These rates were analysed with respect to population size using a quadratic regression model. Regression analyses were also used to examine the relationship of marital exogamy with two measures of geographic distance--average distance to all other parishes and nearest-neighbour distance. Analysis of variance was used to examine temporal trends. Multiple regression analyses were used to examine all of these factors simultaneously. Marital exogamy is highest in smaller and larger populations, and less in medium-sized populations. Higher exogamy rates in small populations are related to the lack of available mates in small groups. Higher exogamy rates in larger populations may reflect economic attraction of larger groups. Exogamy rates are lower in the more geographically isolated parishes. From 1750 through 1899 there is little change in exogamy rates, whereas exogamy rates double after 1900. This temporal change reflects changes in transportation technology and other cultural factors promoting increased migration. The multiple regression model shows population size, geographic distance, and temporal change are all significant correlates of exogamy, collectively explaining a large percentage of variation in rates (R2 = 0.79).
研究使用了1750年至1949年的婚姻记录，以考察人口规模、地理距离和时间变化对芬兰奥兰群岛族外通婚率的影响。计算了四个50年时间段内15个奥兰教区中个人（而非夫妻）的族外通婚率，共计60个观测值。使用二次回归模型对这些比率与人口规模进行了分析。回归分析还用于考察族外通婚与两种地理距离度量指标的关系——到所有其他教区的平均距离和最近邻距离。方差分析用于考察时间趋势。多元回归分析用于同时考察所有这些因素。族外通婚在较小和较大规模的人口中最高，在中等规模人口中较低。小群体中较高的族外通婚率与小群体中可获得配偶的缺乏有关。大群体中较高的族外通婚率可能反映了大群体的经济吸引力。在地理上更孤立的教区，族外通婚率较低。从1750年到1899年，族外通婚率几乎没有变化，而1900年以后族外通婚率翻了一番。这种时间变化反映了交通技术和其他促进移民增加的文化因素的变化。多元回归模型显示，人口规模、地理距离和时间变化都是族外通婚的显著相关因素，共同解释了很大比例的通婚率变化（R2 = 0.79）。
