Scales and items.

Note. For Similarity as well as Closeness & Liking we used a 7-point Likert scale (except for item 7), for Liking of Group Symbol we used a 9-point semantic differential anchored by the two adjectives displayed in this table (Item 1–8) or a 9-point Likert scale anchored as indicated in parentheses (Item 9–11), respectively.
* We adapted the visual 6-point scale to fit our study by using diagrams displaying only four instead of five circles that move increasingly closer to each other as the diagrams progress from the first to the sixth.
Scales and items.