Answer:
Pygmalion effect
Explanation:
Pygmalion effect is the psychological process in which the expectation related to work improves the performance of a person. George Bernard Shaw was a social psychologist who proposed the Pygmalion effect.
Many psychologists conducted much research on the Pygmalion effect. Rosenthal was a psychologist who has been used this affect students' classroom where it has been called a classroom Pygmalion effect.
Thus here Sarah a middle-class school teacher who has been used Pygmalion effect in her classroom to improve the performance of the students.
I believe the answer is: the DSM-5.
the DSM-5 filled with standard classifications that professionals in psychological field can used to identify the type of illness that their patients have. With this classifications, we hoped that there would be less cases when different psychologists offered different conclusions and make the patients confused.
<span>Yellowstone Caldera, United States of America</span>
Moons orbit planets like earth, Jupiter, Uranus, Pluto etc.