When designing a cross-sectional study with different age groups, a researcher is concerned
that cohort differences may influence his study results.
To ease his mind, he ensures that the
oldest participants ( age 80 ) are similar in intelligence, education, and social class to the
younger participants. What is the researcher's primary concern?
A) The older participants may not be representative of the same-aged people in the
community.
B) He relied on a nonprobability or convenience sample.
C) It is very difficult to measure intelligence in older people.
D) He should not have relied on a chain sampling method.
A
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What will be an ideal response?
What is a search space?
a. a list of all the different ways the subject can obtain solution-relevant information b. a representation of all legal states the problem can assume and the moves that lead to the solution c. an aspect of the task that is left blank because its analysis is problematic d. the set of all the elements that make a thing, plus the relations among those elements