Condom use skill is measured, separately, for male and female condoms using checklists of necessary actions. It is measured by (dichotomous) observer ratings of the presence or absence of basic skills for use of each. For each, a total count of number of skills observed is obtained. The following skills for putting a male condom on a penis model are observed: Expiration date on package is checked; package is opened carefully; condom checked for damage; condom rolled correctly downward; condom rolled to base of penis; air removed from condom; space left at tip of condom; lubricant added to condom or penis; withdrew condom and moved away from mode; took care to avoid spilling; and tied off condom and disposed of in trash. The following skills for putting a female condom in a vagina model are observed: expiration date checked; the package is opened carefully; condom checked for damage; condom unrolled and two rings separated; condom rubbed gently to evenly spread lubricant; inner ring squeezed between finger; inner ring pushed into vaginal canal while squeezed; inner ring placed against cervix; outer ring covers outside of vagina; after used condom is twisted and removed taking care not spill contents; and condom disposed of in trash can.