Measurement and Methodology (GRE Psychology): Questions 81 - 82 of 88
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Question number: 81
» Measurement and Methodology » Statistical Procedures
A researcher wants to consider the effects of preparation on standardized test scores. She plans to compare the GRE scores of students who did and did not take a preparation course for the GRE. She also plans to compare the GRE scores of students who took preparation courses though Company X, Company Y, and Company Z.
The researchers found that students who took a preparation course with Companies X and Y scored higher on the GRE than students who did not prepare. But students who took a preparation course with Company Z scored no higher on average than students who did not take a preparation course. These results are an example of
A negative correlation
a flat effect
a main effect
an interaction effect
a zero correlation
Question number: 82
» Measurement and Methodology » Psychometrics, Test Construction, Reliability, Validity
Hailie is writing a psychology research paper. She has collected research from the past three decades, which her professor says is fine. What is confusing for Hailie is that her articles say different things. She finally asks you why all of the research has been published if some of it is obviously wrong. You tell her that
scientists rarely work together or review previous research, which can leave publications in disagreement with each other.
scientists always work together to understand the cause
part of the scientific process is testing and re-testing a theory, to see if everyone gets the same results each time; if they don’t, the research may not agree.
there is no review process in scientific publication; if someone writes well enough, the article will be published regardless of its validity.