Developmental psychologist Dr. Wiggles is interested in preschool children's helping behavior. He spends hours watching children at the campus preschool, taking great care not to interfere with the children or to influence their behavior in any way. What data collection technique is Dr. Wiggles using?

Gay couples tend to ____ than straight couples

a. divide household chores more evenly, but lose contact with prior sex partners more b. retain relationships with former sex partners more, but divide household chores less evenly c. divide household chores more evenly and retain friendships with former sex partners more d. divide household chores more evenly and retain friendships with former sex partners less

To observe conditioning, one could ring a bell and squirt lemon juice into Johnny's mouth. By repeating this procedure several times, you could condition Johnny to salivate to the bell. Conditioning will be most rapid if the US follows immediately after the CS. In this example, the US would be

a. the lemon juice. b. the bell. c. salivation to the bell. d. salivation to the lemon juice.