Materials used in ‘Having versus doing: The roles of moral identity internalization and symbolization for prosocial behaviors’ ****Study One**** *Demographics* What is your current age? (open ended question) What is your gender? (Female/Male) *Self-Importance of Moral Identity Scale* (used all items) Source: Aquino, K., & Reed II, A. (2002). The self-importance of moral identity. Journal of personality and social psychology, 83(6), 1423. *Prosocial Behaviors Rating Scale (PBRS)* Available in accopanying .pdf document Instructions: Considering the LAST ONE (1) YEAR, please indicate how many times you have engaged in the following behaviors. Remember your answers will be kept completely anonymous. It is important that you are as honest as possible. Likert Scale: 1. Never 2. Once or twice 3. Three to six times 4. Nearly once a month 5. More than once per month Items: (ordered as written) 1. I have donated clothing or goods to charity 2. I have delayed an elevator in order to hold the door open for a stranger 3. I have allowed somebody to go ahead of me in a line 4. I have bought something deliberately because I knew some of the proceeds would go to charity 5. I have shared credit for an accomplishment when I could have taken it all 6. As part of a group I have done menial jobs without being asked, even though it is not directly my responsibility 7. I have shared knowledge with colleagues in order to help them get ahead 8. I have ‘picked up the slack’ at work for a colleague who could not keep up the pace 9. I have participated in a political party, club or organization 10. I have helped with a fund-raising project 11. I have done volunteer work 12. I have contributed time and/or labor to community involvement activities 13. I have helped people who were new to my country 14. I volunteered to help those in need prior to being asked 15. I felt empathetic to those in need and therefore chose to help out in some way 16. I went out of my way to help a friend that expressed they felt emotionally distressed *Marlowe-Crowne Social Desirability Scale* (used all items) Source: Strahan, R., & Gerbasi, K. C. (1972). Short, homogeneous versions of the Marlowe-Crowne Social Desirability Scale. Journal of clinical psychology. ****Study Two**** Same scales as above, except the PBRS was replaced by: *Prosocial Behaviors Rating Scale-Public Private (PBRS-PP)* Available in accopanying .pdf document Instructions: The next two sections of questions will ask you to recall behaviors from the past year. Sometimes behaviors are public and able to be observed by others, while others are private or anonymous. An example of a behavior that is public/observable is "Donating coins to a collection box". An example of an anonymous/private behavior is "Donating money to charity anonymously". Sometimes it can be difficult to recall the number of times you have performed a specific behavior. Please take your time when to consider each behavior and simply answer as best as you can. Items: (ordered as written) *OBS:* The “private” and “public” subscale ordering was randomized Private subscale The following items all concern behaviors that are anonymous/private. Considering the LAST ONE (1) YEAR, please indicate how many times you have engaged in the following behaviors: 1. ‘Picked up the slack’ for somebody that needed help, without being noticed 2. Volunteered to help somebody in need because you felt empathy towards them 3. Gone out of your way to help a friend without telling them it was inconvenient for you 4. Helped somebody in need without them knowing it was you 5. Donated clothing or goods through an anonymous drop-off box 6. Donated money anonymously Public subscale The following items all concern behaviors that are public/could be observed by others. Considering the LAST ONE (1) YEAR, please indicate how many times you have engaged in the following behaviors: 1. Delayed an elevator in order to hold the door open for a stranger 2. Allowed somebody to go ahead of you in a line 3. Given clothing or goods to charity publically 4. Given money to charity publically 5. Participated in a political party, club or organization 6. Helped with a fund-raising project 7. Done volunteer work, other than fundraising 8. Publically contributed time and/or labor to community involvement activities 9. Helped people who were new to your country 10. Shared credit for an accomplishment when you could have taken it all 11. Done small tasks as part of a group, even though they were not directly your responsibility 12. ‘Picked up the slack' for somebody that needed help, through a visible action 13. Shared knowledge with somebody in order to help them get ahead 14. Did something kind for an upset/sick friend to explicitly express your distress 15. Comforted somebody who was distressed