序号

关键词

频次

中心性

序号

关键词

频次

1

positive psychology

72

0.04

11

students

28

2

anxiety

65

0.1

12

model

25

3

emotions

64

0.02

13

words

24

4

motivation

53

0.07

14

performance

24

5

language

50

0.22

15

learners

23

6

2nd language

41

0.2

16

willingness

23

7

enjoyment

39

0.03

17

communicate

19

8

English

37

0.11

18

foreign language anxiety

17

9

Foreignlanguage enjoyment

37

0.03

19

second language acquisition

16

10

achievement

30

0.04

20

validation

16