A researcher tests the influence of environment on cognitive development by taking newborn children away from their parents and assigning half of them to a rich cognitive environment and half to a deprived cognitive environment. Is there anything wrong with this experiment, and if so, what?
a. No; there is nothing wrong with this experiment.
b. Yes; there is no control group.
c. Yes; this experimental method violates ethical standards.
d. Yes; this experimental method cannot control for the Hawthorne effect.
Question 2
Brads thesis advisor often tells him that its important to strive for results that are statistically significant. He explains that to have results that are statistically significant means that ____.
a. descriptive statistics were used in this study
b. participants were randomized in his study
c. there was no random selection
d. there is a small chance that the results were caused by random variables
Root nodule development.
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