Social Studies, 29.10.2019 00:31 emojigirl5754

Magali and jean-gabriel have been asked to design a study investigating happiness across the lifespan. they decide their study will involve going to the mall and asking people of a variety of ages if they are happy or unhappy. what is the most serious flaw of this design?
a. people will know that they are part of a research study and may decline participation.
b. survey data is not as valid as experimental data.
c. their results will depend on how busy the mall is.
d. they have not defined happiness or how it will be measured.

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