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According to the collision theory of reaction rates, what are the three requirements which must be met before an elementary reaction between two molecules can occur?
Anal Stage
The second stage in Freud's psychosexual development theory, occurring between 18 months and three years, where the child's libido is focused on the anus, and toilet training is a key experience.
Phallic Stage
Stage in which, according to Sigmund Freud, boys become focused on their penis and girls become aware that they do not have one. Girls are said to develop penis envy (that is, they desire to have a penis and feel cheated).
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