The drop in self-esteem often found when children first enter middle school appears to be due to
a. the acquisition of concrete operational thinking.
b. peer comparisons
c. changes in ethnic identity.
d. the illusion of invulnerability.
b
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THC metabolites can be detected in the bloodstream at least 30 days following ingestion of a single dose
a. True b. False Indicate whether the statement is true or false
Madison's mother warmly greeted an old college friend in the grocery store. After observing her mother, Madison smiled too. Madison engaged in social referencing to gauge her own reaction to her mother's friend
Indicate whether this statement is true or false.
Ursula works in an office. One day, her boss tells her that researchers will be in the office to observe productivity. Because she knows she is being observed, Ursula finds that she is working harder than she normally does. What is this an example of?
A) the placebo effect. B) the Heisenberg principle C) a single-blind study D) the Hawthorne effect
Linzie hypothesized that a gene mutation in a mouse that increased agouti-related protein would produce an animal with a genetic basis for ______.
A. anorexia B. diabetes C. obesity D. poor taste discrimination