Check This Word Out! Exploring the Factors That Affect Students’ Vocabulary Learning Using Smartphones via Partial Least Squares

Table 4

Discriminant validity of the measurement model.

Construct	Attitude	Perceived ease of use	Perceived usefulness	Vocabulary learning
Attitude	(0.79)
Perceived ease of use	0.1798	(0.87)
Perceived usefulness	0.5106	0.024	(0.80)
Vocabulary learning	0.6043	0.0408	0.314	(0.79)

Note: figures in parentheses represent the squared root of the average variance extracted, while the others represent the correlations.