Demographic data for all of the participants.

a

Age and the questionnaire scores were compared using independent sample t-tests.

CBSS = Cheek and Buss Shyness Scale; score ranges from 13 to 65.

LSAS = Liebowitz Social Anxiety Scale; score ranges from 0 to 144. This scale includes two important subscales, namely Total Fear and Total Avoidance, which is derived by summing the fear and avoidance rating for all items.

CSTAI-T = The Chinese State-Trait Anxiety Inventory, Trait version; score ranges from 20 to 80.