Items:

Condom use intentions
1. During the next month, you intend to try to persuade [name of partner] to use condoms every time you have sex.
2. You intend to get condoms during the next month.
3. You intend to always have condoms handy during the next month.
4. You intend to use condoms every time you have sex with [name of partner] during the next month?

Response Options:
5-point Likert scale
Not at all likely - 1
Extremely likely - 5

Attitudes toward condoms
5. How good of an idea do you think that trying to persuade [name of partner] to use condoms every time you have sex would be?
6. How good of an idea do you think that getting condoms during the next month would be?
7. How good of an idea do you think that always having condoms handy during the next month would be?
8. In the next month, how good of an idea do you think that you and [name of partner] using condoms every time you have sex would be?

Response Options:
5-point Likert scale
A very bad idea - 1
A very good idea - 5

Condom use self-efficacy
9. How confident are you that you could suggest using a condom, even if you were afraid that [name of partner] would reject you?
10. How confident are you that you could suggest using a condom, even if you were unsure of how [name of partner] felt about using condoms?
11. How confident are you that you could suggest using a condom, even if you were afraid that [name of partner] would think that you have had sex with another [manwoman] before?
12. How confident are you that you could suggest using a condom, even if you were afraid that [name of partner] would think you have a sexually transmitted disease?
13. How confident are you that you could suggest using a condom with [name of partner], without [herhim] think you thought [shehe] had a sexually transmitted disease?
14. How confident do you feel in your ability to discuss using condoms with [name of partner]?
15. How confident do you feel in your ability to suggest using condoms with [name of partner]?
16. How confident do you feel in your ability to put a condom on [name of partner] correctly?
17. How confident do you feel in your ability to use a condom correctly with [name of partner]?
18. How confident do you feel in your ability to put a condom on without breaking the sexual mood with [name of partner]?
19. How confident do you feel in your ability to buy condoms without feeling embarrassed?
20. How confident are you that you could remember to carry a condom with you in case you need one?
21. How confident do you feel in your ability to use a condom with [name of partner] even after you have been drinking?
22. How confident do you feel in your ability to use a condom with [name of partner] even if you were high?
23. How confident do you feel in your ability to use a condom with [name of partner] even if you were sexually excited?

Response Options:
5-point Likert scale
Not at all confident - 1
Extremely confident - 5

Perceived partner norms
23. How important is it to [name of partner] that you get condoms during the next month?
24. How important is it to [name of partner] that you always have condoms handy during the next month?
25. How important is it to [name of partner] that you and [shehe] use condoms every time you have sex in the next month?

Response Options:
5-point Likert scale
Not important at all - 1
Extremely important - 5

Partner-specific perceived vulnerability
26. How likely is it that you could get HIV from having sex with [name of partner] without using a condom?
27. How likely is it that you could get a sexually transmitted disease other than HIV from having sex with [name of partner] without using a condom?

Response Options:
5-point Likert scale
Not at all likely - 1
Extremely likely - 5

HIV information heuristics
28. If you love and trust someone, you don't have to worry about getting HIV from them.
29. You can tell whether someone has HIV by the way they look.
30. Only people who are homosexual or who use drugs really have to worry about getting HIV?
31. If you know a person very well, you don't have to use condoms to protect against getting HIV from them.
32. You don't have to use a condom for HIV protection if you are in a relationship with just one person, even if that person had sex without a condom with other people before.
33. If a person is not a drug user, you don't need to worry about getting HIV from them.
34. It's more important to use condoms in one-night stands and flings than in real relationships.
35. If you know a person's sexual history and lifestyle before you have sex with them, you do not need to use condoms.

Response Options:
5-point Likert scale
Definitely false - 1
Definitely true - 5

Duration of relationship
36. How long have you been in a sexual relationship with [name of partner]?

Response Options:
[__] number of months

Relationship commitment
37. Even when [name of partner] is hard to deal with, you remain committed to your relationship.
38. Because of your commitment to [name of partner], you would not let other people come between you.
39. You have faith that your relationship with [name of partner] will continue.
40. You view your relationship with [name of partner] as permanent.
41. You can't imagine ending your relationship with [name of partner].

Response Options:
5-point Likert scale
Not at all like your relationship - 1
Extremely like your relationship - 5

Condom use and pregnancy prevention decision-making
42. How much do you take part in deciding whether or not to use something to keep [yourselfyour partner] from getting pregnant?
43. How much do you take part in deciding whether or not to use a condom with [name of partner]?

Response Options:
5-point Likert scale
Not at all - 1
A great deal - 5