Answer:
A. unequal wealth distribution has left many people poor, creating tensions within countries
Explanation:
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Egocentrism is the correct answer.
Egocentrism, in psychology, the cognitive shortcomings that underlie the failure, in both children and adults, to recognize the idiosyncratic nature of one's knowledge or the subjective nature of one's perceptions.
Egocentrism refers to someone's inability to understand that another person's view or opinion may be different than their own. 1 It represents a cognitive bias, in that someone would assume that others share the same perspective as they do, unable to imagine that other people would have a perception of their own.
Due to egocentrism, the child is only concerned with the final outcome of an event rather than another's intentions. For example, if someone breaks the child's toy, the child would not forgive the other and the child would not be able to understand that the person who broke the toy did not intend to break it.
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The common problem of the research investigating the massed vs. the distributed practice is the <u>lack </u><u>of a </u><u>retention </u><u>or </u><u>transfer test</u>.
The research which intends to investigates the massed refers to one that targets a large population at a time
The research which intends to investigates the distributed refers to one that target the different section of the large population
However, the common limitation of the two research is lack of a retention or transfer test in the investigation.
Therefore, the Option A is correct.
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New ideas- even if the research is medical, the real reason focuses on the introduction of new ideas.