Professor Todd decides to test her hypothesis that eating chocolate prior to exams increases students' test scores
She randomly assigns students to two groups at the beginning of the semester. One group receives a bar of chocolate before each test, while the other group receives another type of candy. She compares their scores at the end of the year, and finds that the students who ate the chocolate scored an average of ten points higher on their exams. What is the dependent variable in this experiment?
A) Students' test scores
B) Chocolate bars
C) The students themselves
D) The professor
Answer: A
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According to the authors, it is not easy to understand and explain other people's behaviour because
A) other people work to hide their motivations and intentions. B) we only have access to observable behaviours. C) we are biased by our own motivations. D) social behaviour is often random. E) social behaviour is often performed without conscious awareness.
All of the following are typical of Piaget's concrete operational stage EXCEPT:
A) abstract thinking. B) hierarchical classification. C) understanding class inclusion relationships. D) seriation.