A psychologist wants to find out wheter increasingnutritino results in people improving their intelligence. She randomly assigns one group of participants to receive extra vitamins with a certain type of cereal and milk every day for 6 months, while the other group only gets the cereal and milk for breakfast. The psychologist’s research assistant measures each participant’s intelligence before and after the study, without knowing which group the participant is in. n

a.     How might the psychologist operationally define intelligence?

b.     Identify the independent and dependent variables.

c.      Which is the experimental group?

d.     What makes this study a true experiment?

e.      What might be a demand characteristic in this study?

f.       Is this a nonblind, blind, or double-blind study?

g.     How might a placebo condition have been built into this study? _Give a pill that’s not a vitamin_

Answers

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