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

Table 5

Mediation analysis of the directional similarity as mediator of the relationship between simplicity of information structure and the number of clicks.

	Point estimate	SE			Indirect effect	SE
Mod 1					1.23	0.45	2.73	92
Intercept	1.45	1.15	1.26
Pred	3.68	0.54	6.81
Mod 2
Intercept	0.02	1.21	0.02
Pred	2.45	0.67	3.66
Med	5.13	1.76	2.91
Mod 3
Intercept	0.28	0.07	4.00
Pred	0.24	0.03	8.00

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