Table 1 Model fit indices for competing CFA models.

From: AI acceptance and Chinese EFL learners’ behavioral engagement with mediating effects of motivation

Model

χ2

df

χ2/df

CFI

TLI

RMSEA

SRMR

Single-factor

192 124.9

4 655

41.27

0.9522

0.9512

0.2483

0.1360

Three-factor

28 243.4

4 652

6.07

0.9940

0.9939

0.0881

0.0547

Six-factor

17 776.7

4 627

3.84

0.9966

0.9966

0.0660

0.0416