Watson, Detra, Fox, Ewing, Gearhart, and DeMotts (1996) administered two self-report alcoholism measures to 118 volunteers recruited from a Veterans Administration Medical Center. At approximately the same time, they asked the volunteers to complete the Diagnostic Interview Schedule. The study is an example of

concurrent evidence of validity

Explanation:

Based on the scenario being described within the question it can be said that the study is an example of concurrent evidence of validity. This is a type of evidence that is collected in order to support the use of another specific test that predicts an outcome. This is what the researchers are doing by making the volunteers complete the Diagnostic Interview Schedule which allows them to make accurate diagnostics for their other study.

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

b.