Table 1 Questions of EMA

Social situation: Reflect on events within the past five hours from now and select the most recent one out of the following social situations you have experienced.

1. Participating in small groups or meetings

Multiple-choice (select one from ten options)

2. Eating or drinking in public places

3. Having a one-on-one conversation

4. Talking on the phone with someone

5. Acting in front of an audience

6. Giving a report to a group

7. Telephoning in public

8. Working while being observed

9. Being in a crowded place

10. I did not experience any social situation

Details about the social situation: Answer the following questions about the social situation you selected in the previous section.

1. When did that social scene begin and end?

Free form

2. Who were you with in the social situation?

3. Where were you when experiencing the social situation?

Perception of stimuli: Reflect on the social situation you have experienced, and answer if each of the following items applied to the situation. The expression “the person in the social situation” in the following items includes the person you were calling if the situation was “talking on the phone with someone” or “telephoning in public.“

1. Gaze from the person in the social situation

2-point scale

1. No

2. Yes

2. Negative responses from the person in the social situation

3. Positive responses from the person in the social situation

4. Being evaluated by the person in the social situation

5. The person in the social situation had more authority than you (e.g., teacher, boss, etc.)

6. Speaking to or saying something to the person in the situation

7. The person in the social situation was a stranger

8. The person in the social situation was an acquaintance

9. The person in the social situation was close to you (e.g., friends, lover, etc.)

Fear of stimuli: Reflect on the social situation you have experienced, and answer each of the following items to what extent it fitted your fear in the situation.

1. I was afraid of being looked at by the person in the situation

6-point scale

1. Strongly disagree

2. Disagree

3. Somewhat disagree

4. Somewhat agree

5. Agree

6. Strongly agree

2. I was afraid of negative responses (anger, disgust, etc.) from the person in the situation

3. I was afraid of positive responses (smile, praise, etc.) from the person in the situation

4. I was afraid of being evaluated by the person in the situation

5. I was afraid of authority figures in the situation

6. I was afraid of speaking to or saying something to the person in the social situation

7. I was afraid of strangers

8. I was afraid of acquaintances

9. I was afraid of familiar persons

Self-focused attention from an observer perspective: Reflect on the social situations you have experienced, and answer each of the following items to what extent it fitted your behavior.

1. I was worried about myself through other people’s eyes

6-point scale

1. Strongly disagree

2. Disagree

3. Somewhat disagree

4. Somewhat agree

5. Agree

6. Strongly agree

2. I was concerned about how I appeared to others

3. I imagined how I looked like to others

4. Although I did not want to worry about how I appeared to others, I couldn’t stop worrying about it

Self-focus on body sensation: Reflect on the social situations you have experienced, and answer each of the following items to what extent it fitted your behavior.

1. I was paying attention to my complexion

6-point scale

1. Strongly disagree

2. Disagree

3. Somewhat disagree

4. Somewhat agree

5. Agree

6. Strongly agree

2. I was paying attention to my physical reactions (e.g., heart rate)

3. I was paying attention to my body temperature

4. I was paying attention to my sweat