For the following cases, determine whether the sampling is dependent or independent. Explain your conclusion.

1. Fifty married couples were randomly selected. The husbands and wives were placed in separate rooms. They were then given a questionnaire to assess the strength of the couple's relationship. The researchers wanted to know if there is a difference in the perception of the women versus the men.

2. A group of seventh-graders at Jefferson Middle School were given a presentation on the dangers of drug use. Both before and after the presentation, the students were asked to indicate (on a scale of 1 to 100) the likelihood that they would ever use illegal drugs in the future. School officials wanted to assess the effectiveness of the presentation as a drug abuse prevention tool.