Final answer:
The explanatory variable is the size of tableware, while the response variable is the amount of food consumed. The treatments are the different sizes of tableware used. Randomly dividing participants into groups for texting and driving simultaneously is not a good idea due to safety concerns. Lurking variables that could interfere with the study include driving experience and reaction time. Blinding can be used to prevent bias.
Step-by-step explanation:
The explanatory variable is the variable that is manipulated or controlled by the researcher. In this study, the size of tableware (bowls, plates, etc.) is the explanatory variable.
The response variable is the variable that is observed or measured to determine the effect of the explanatory variable. In this study, the amount of food consumed by the college students is the response variable.
The treatments in this study are the different sizes of tableware used: normal-sized tableware and tableware that is 20 percent smaller than normal.
When selecting participants, it is important to consider factors such as their age, gender, and any pre-existing conditions that might affect the results of the study.
Dividing participants randomly into two groups, one to drive without distraction and one to text and drive simultaneously, is not a good idea. This is because texting and driving simultaneously can be dangerous and increase the risk of accidents. It is important to prioritize the safety and well-being of the participants.
Lurking variables that could interfere with this study include factors such as the participants' driving experience, reaction time, and attention span.
Blinding can be used in this study by not informing the participants which group they belong to (driving without distraction or texting and driving simultaneously). This helps to prevent bias and ensure that the results are not influenced by participants' expectations or beliefs.