本文採用一組行政區劃來界定各種遷徙類型。這種區分法，一則反應遷徙距離的遠近，二則也反應勞動力市場的大小。希望透過這種區分法來探討遷徙的選擇性是否具有漸進性，也就是說當遷徙的距離增加或所涵蓋之勞動力市場越擴大，遷徙者的特徵也作漸進性的變化。另外，各類型遷徙者是否受到不同原因的驅使，也是探討的重點之一。 本文的分析結果顯示，在五類移動者中，年齡選擇性呈漸進型態。在性別與婚姻狀況方面，祇在遷徙者與本地內移動者之細類中可以看到選擇的漸進性。而職業與教育程度，祇在少數幾類移動中具影響力。另外，我們也發現遷徙選擇性之漸進性受到兩個因素之影響，其一是各類移動中搬遷動機之組成，其二是社會的開發程度。

In this paper, a scheme of administrative units is employed to define various types of move. Such kind of classification reflects both scope of market and distance of move. It thus allows us to explore whether selectivity of movement is progressive as distance of move increases Or market scope extends. In addition, whether they are motivated by different considerations is another focus of discussion. Results of this paper suggest that progressive selectivity for all types of movers is observed in terms of age. For sex and marital status, progressive selectivity is observed within subgroups of local movers and migrants. However, occupation and education have significant effects on probabilities of being few type of movers. Meanwhile, we also find that progressive selectivity is subject to the influence of two factors. One is the composition of each type of move by reasons of move; the other is development stage of a society.