22, A researcher is interested in assessing the combined effect of a cup of morn

Question

22, A researcher is interested in assessing the combined effect of a cup of morning coffee (yes or no) and a good night's sleep (yes or no) on degree of agitation. The researcher discovers that there is an additive effect of the two variables. This indicates that: a. There was no interaction effect and neither variable affected agitation alone (in other words, there were no main effects either). b. There was a main effect of coffee, but no main effect of sleep. There was an interaction effect, such that people who drink coffee and did not

Explanation / Answer

The additive effect of the 2 variables means that the main effect of the 2 variables could be added here and there is no interaction effect of the 2 variables, therefore there is no term required to have that kind of effect. Therefore c is the correct answer here.

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.