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Author Question: Why would a single blind study be less effective in controlling for experimenter-participant ... (Read 71 times)

Melani1276

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on: Jul 13, 2018
Why would a single blind study be less effective in controlling for experimenter-participant communication than a double blind study?
 
  What will be an ideal response?

Question 2

What are the advantages of longitudinal designs and cross-sectional designs?
 
  What will be an ideal response?


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jasonq

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Reply #1 on: Jul 13, 2018
Answer to Question 1

In the typical single blind study, the researcher can still communicate expectations to the participant in very subtle ways, without knowing about it. If the experimenter doesn't know which group the participant is in, though, it will be impossible to communicate critical information that will affect the participant's behavior.

Answer to Question 2

Longitudinal designs permit the study of change in an individual over time, avoiding cohort effects that could confuse change over time in a person with change due to different environments. Cross-sectional designs are quicker to complete, allowing assessment of different populations in a short time period.


Melani1276

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Reply #2 on: Jul 13, 2018
Thank you


jasonq

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Reply #3 on: Jul 13, 2018
No problemo


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