Multiple Choice
The isotope 
has a half-life of 7.5 seconds. If a sample contains 144 atoms of 
approximately how many such atoms were there present 30 seconds earlier?
Understand the predominant unconscious defense mechanisms among children.
Analyze the findings of research on Freud's theory of humor.
Grasp Freud's perspective on effectively utilizing humor to mitigate aggression.
Examine the relationship between types of humor and psychological well-being.
Definitions:
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