Sam, a researcher, observed that his colleague Jill fell sick the day after she ate from a particular food truck. Sam concludes that the food from the food truck caused Jill to fall sick. In the context of the types of evidence described by Cook and Campbell (1979), in this scenario, Sam fails to

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Sam, a researcher, observed that Jill, his colleague, fell sick the day after she ate from a particular food truck. Hence, Sam concludes that the food from the food truck caused Jill to fall sick. In the context of the types of evidence described by Cook and Campbell (1979), in this scenario, Sam fails to :

A. eliminate alternative explanations

B. account for temporal precedence

C. eliminate the influence of facilitated communication

D. consider the option of an authority

In this scenario, Sam fails to:

A. eliminate alternative explanations

Explanation:

It might very well be that Sam is right, and that Jill did fall sick due to the food she had from that particular food truck. However, at no moment did Sam consider other alternatives. To him, it is as if not other explanation were possible, only that one. There may be several reasons why Jill fell sick. The appropriate thing to be done would be for Sam to consider these other options and then work to eliminate them.

answer; standardization;

answer; a biased sample;