Genetically modified food Recently, researchers have explored whether geneticall
ID: 3526472 • Letter: G
Question
Genetically modified food
Recently, researchers have explored whether genetically modified food might actually taste better than natural food. Dr. Longert, an expert researcher working for a company that genetically modifies food, conducted an experiment to test whether consumers prefer the taste of genetically modified food over unaltered food.
Longert decided to conduct the experiment himself to ensure it was conducted according to his methodology. The experimenter selected 50 individuals who worked at the company to participate in the experiment. “Dr. Longert approached me over lunch break a few months ago,” says colleague Sandra Winert, “and I was really excited about his study and was happy to help out. In fact, all of us who participated were excited about the importance of this study for our company!”
The 50 coworkers were randomly assigned to either a genetically modified food group or the natural food group. This resulted in 25 participants assigned to each group, one containing those coworkers that were consuming genetically modified foods on a regular basis (GM group) and one that consumed natural foods (N group).
For the actual experiment, all fifty participants were asked to look at a variety of food items that were either genetically modified (GM group) or natural (N group). These foods included produce, such as bell peppers and apples, as well as processed foods made of either genetically modified or natural foods. All 50 participants rated their food items on a 5 point scale, indicating how visually appealing the food looked (with 1 indicating “not visually appealing at all” to 5 indicating “highly visually appealing”).
The results indicated clearly that the participants in the GM group rated their foods, all of which were genetically modified, as significantly more appealing than participants in the N group. Dr. Longert decided to replicate the study with a new sample of coworkers, and found similar results. “The data have spoken clearly,” says Dr. Longert. “We have to assume at this point that genetically modified food probably tastes better than natural food.”
Which of the following are true (there may be more than 1):
- Poor or missing comparison group
- No Random assignment
- DV could be more sensitive, accurate, or precise
- DV is not scored objectively
- DV is not valid
- subject/participant bias
- mortality or attrition
- small sample size
- poor sample selection
- experimenter bias
- premature generalization of results
- confuse correlation with causation
Explanation / Answer
No random assignment, subject bias, small sample size, poor sample selection, experimenter bias, premature generalization of results.
As the coworkers were selected instead of actual consumers The subjects weren't random and the subject bias must have permeated the study as well as the experimenters bias. Also, the sample size was too small to have led to generalization of results to the population of the consumers
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