In 2017, Alia Crum, Brad Turnwald, and Danielle Boles published a study in which they experimentally manipulated the labels used to describe vegetables (the independent variable) and measured the quantity of vegetables that people ate (the dependent variable). This was a true experimental design because they experimentally manipulated the independent variable by randomly assigning participants to conditions in which vegetables were described with either evocative and flavorful labels or neutrallabels. The results showed that participants ate more vegetables when they were described with evocative labels than when they were described with neutral labels.

After they completed the original study, the researchers conducted a larger study at university dining halls to extend their findings. The larger study conducted in university dining halls enhanced the external validity and the ecological validity of the research. For your homework assignment, read the entire article posted on the APS website and answer the following questions:

1) Describe why the larger study enhanced theexternalvalidity of the research based on generalizability from the sample to the population. Define external validity related to the population and use information in Chapter 14 of your textbook and in the Week 4 video about Validity to explain why the larger study helps to improve this type of external validity. (7 pts)

2)Describe why the larger study enhanced theecological validity of the research based on real-world context. Define ecological validity and use information in Chapter 14 of your textbook and in the Week 4 video about Validity to explain why the larger study helps to improve ecological validity. (7 pts)

3) Continue to think about the external and ecological validity of these studies. Propose one idea that would continue to improve the external or ecological validity of the research. When writing your response, be sure to clearly state your idea and clearly state which type of validity (external or ecological) your idea would help to improve.