Deck 14: Randomized Experiments

Question 1

A grocery chain set up tasting booths on two weekends to test shoppers' reaction to a new food item .Respondents were not chosen by formal randomization procedures, but participated based upon being passers-by near the tasting booths .This is an example of:

A)Arbitrary selection
B)Unsystematic selection
C)Haphazard randomization
D)None of the above

Answer 1

C

Question 2

Two researchers are interested in studying how different settings for breakfast (classroom or cafeteria) affect elementary students breakfast consumption and attention in class .This type of study would utilize a ________ to study the students in a real-world setting.

A)Ground experiment
B)Field experiment
C)Thematic experiment
D)Provincial experiment

Answer 2

B

Question 3

Which is an example of intent to treat analysis in an experimental food stamp program?

A)Individuals in the control group who did not take a posttest are dropped from the study.
B)Members of the treatment group who used less than half of the food stamps they received were not included in the statistical analysis.
C)All participants were kept in their original group-treatment or control-regardless of whether they participated fully.
D)Those in the treatment group who never showed up to get their benefit card were changed to the control group.

Answer 3

C

Question 4

Professor Smith is conducting a study on the psychological effects of gambling .She wants to make sure that the findings from her study may potentially help some gamblers avoid addiction .This is known as:

A)Beneficence
B)Benevolence
C)Munificence
D)None of the above

Question 5

A group of medical practitioners are studying the effects of a drug on patients .They administered the drug to one group, and withheld the intervention / treatment from the other .They determined who was in which group based on a random number generator .This is known as:

A)Random assignment
B)Chance assignment
C)Unsystematic selection
D)Indiscriminate selection

Question 6

A professor of management has designed a field experiment at a local manufacturing firm .To collect the data he will visit the firm and observe behavior and is worried that the employees may change their behavior in response to his presence .This is known as the:

A)Displacement affect
B)Hawthorne effect
C)Louis effect
D)Alteration effect

Question 7

A medical doctor is studying the effects of a drug on two groups of patients .For the first group, she administers the actual drug to determine if it has an effect on the patients' condition .But for the second group, she administers a phony pill that has no properties .The phony pill administered to group two is known as a:

A)Dummy
B)Bogus
C)Placebo
D)None of the above

Question 8

Researchers must be aware of and address the possibility of ________, where participants drop out from the experiment.

A)Erosion
B)Corrosion
C)Forfeiture
D)Attrition

Question 9

A researcher wants to compare multiple possible treatment or control conditions for a particular disease .These are referred to as the ____ of an experiment.

A)Arms
B)Legs
C)Ancillaries
D)Units

Question 10

Randomized experiments can be implemented through:

A)Lab experiments
B)Field experiments
C)Survey experiments
D)All of the above

Question 11

A researcher wants to study the effects of offering financial management skills in poor neighborhoods .She decides to use _______ randomization, since she thinks that people may spread their financial management skills to their neighbors.

A)Segmented
B)Bundled
C)Collected
D)Cluster