How Influential Are Mental Models on Interaction Performance? Exploring the Gap between Users’ and Designers’ Mental Models through a New Quantitative Method

Table 6

Mediation analysis of the directionless similarity as mediator of the relationship between simplicity of information structure and the task completion time.

	Point estimate	SE			Indirect effect	SE
Mod 1						0.23		92
Intercept	13.85	1.77	7.82
Pred	1.77	0.83	2.13
Mod 2
Intercept	19.71	4.56	4.32
Pred	2.05	0.85	2.41
Med		4.83
Mod 3
Intercept	0.87	0.04	21.75
Pred	0.04	0.02	2.00

Note. Med refers to mediator. Pred refers to independent variable.