Fig. 1: Hypothetical, simplified network of the attitude toward wearing a face mask.

The network consists of a behavioral element (“Wearing a face mask”), cognitive element (“Wearing a face mask is effective to prevent the spread of the virus”), and three affective elements (“Fear of disease caused by the virus”, “Feeling sad about not seeing other people’s faces” and “Disliking an object covering mouth and nodes”). Edges with arrows indicate the direction of predictive effects and the width indicates the strength of this effect. This example shows that disliking an object covering mouth and nose is predicted by both wearing a face mask and feeling sad about not seeing other people's faces, with the former having the strongest predictive effect, as indicated by different edge width. The example shows both unidirectional (e.g., wearing a face mask and fear of disease) and bidirectional effects (e.g., wearing a face mask and effective to prevent spread) with edges of different strengths.