Trinity and her colleagues conduct an experiment on two groups of people to establish

The dependent variable is their degree of sleepiness.

Explanation:

In a correlational study, an independent variable is expected to affect a dependent variable. In the example, the level of caffeine intake is predicted to change the participants' sleep patterns. In other words, the degree of sleepiness depends on the caffeine levels.

An easy way to remember the difference is to say: Independent causes change in dependent.

#1. They often overlook and do not recognize the level of sophistication most college students have regarding most aspects of alcohol and other drugs.

#4. They don't recognize the highly effective strategies like Red Ribbon Week.

Explanation:

The majority of drug prevention and education efforts are made on the assumption that the students do not know the negative effect of drugs and alcohol. While the fact is that they do know, but they just knowingly overlook it in order to obtain other gains such as social status or experiences.

Red ribbon week is initiated in order to bring awareness of the fallen victims of drug/alcohol relate events. So, rather try to convince the students about how the drugs and alcohol are physically bad for them, we try to make them realize that substances often resulted in harms for others and often sold by criminal organizations.