Which of the following is a disadvantage to administering surveys via interviews?

Identify the problem with this survey question: Do you enjoy studying and spending time with friends on weekends?

Egg sizes (small, medium, large, extra-large, jumbo)

Researchers are studying the influence of coffee consumption on heart disease and find that those who report drinking more coffee also report a higher incidence of heart disease. However, it may be the case that those who drink coffee are also more likely to smoke cigarettes and the cigarette smoking is having an influence on the relationship between caffeine consumption and heart disease. What is this an example of?

Part C. Identifying Sampling Techniques (4 questions, worth 1 point each for a total of 4 points). Read the following sampling examples and correctly identify the one best type of sampling the researchers are using. You might use response options more than once and some might not be used at all. Type of sampling: Cluster Sampling, Snowball sampling, Quota Sampling, Purposive Sampling, Simple random sampling, Convenience Sampling, Stratified random sampling

Dr. Williams has created a new measure of social anxiety for teens. Dr. Williams is examining the validity of his new measure and finds that his new questionnaire is predictive of a diagnosis of social anxiety disorder. What type of validity did Dr. Williams establish with his new questionnaire?

A group of children diagnosed with asthma are compared to a group of children without asthma to understand how exposure to air pollution influences the development of asthma.

Part A. Multiple-choice questions (14 questions, worth 2 points each for a total of 28 points). Choose the best or most appropriate answer from the choices listed below the question stem. There is only one correct answer for each question. Make sure to read the questions clearly before answering and clearly indicate which answer you are choosing.

This type of validity examines the extent to which two measures are unrelated to one another.

If researchers want to ensure that extraneous variables are equally likely to affect participants, what do they do within their study design?