Table 2.

Study variables and specific measurements.

Variable Type	Variable Name	Method of measurement
Dependent variable	learning-application matching	From Xu et al. [37], divide them into 5 dimensions: “very irrelevant”, “less relevant”, “general”, “relatively relevant” and “very relevant”. Values of 1–5 from low to high
Independent variable	Family capital	From Wang [49], assign 1–5 to the annual income of family from low to high.
		From Li [50], assign 1–5 values to the education level of parents from low to high.
		From Li [50], the occupation of father/mother is assigned 1–5 from low to high according to professional prestige.
Intermediary variable	Human capital	From Huang [31] and Liu [18] to extract professional specific skills (professional ability), including 8 items in total
		From Huang [31], Liu [18] and Wang [38] to extract general vocational skills (general ability), including 10 items in total
		From the research and allocation ability of Tian [19] with 7 items in total
Control variable	Sex	0 for women and 1 for men
	Admission selection method	The value of undergraduate is 0, and the value of upgrading from junior college to undergraduate is 1.
	Disciplinary background	The value of literature, history, philosophy and arts is 0, and the value of economic management, law and education is 1.