We wish to test the hypothesis that music improves learning
We compare test scores of students who study to music with those who study in silence. Which of the following is an extraneous variable in this experiment?
a. the presence or absence of music
b. the students' test scores
c. the amount of time allowed for studying
d. silence
ANSWER: c
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What is one problem with the proposed suicidal behavior disorder? a. It would only include successful completion of attempts. b. It would encourage repeated suicide attempts
c. It would include nonsuicidal self-injury. d. It would only be associated with a single suicide attempt.
According to the article Coming of Age about the timing of puberty and adolescent behavior, sexual maturation was measured by:
(a) a blood test (b) a self-rated comparison with drawings (c) parental surveys (d) a ratio of bone mass to muscle mass
If you do not hear the traffic outside your psychology class because you are engrossed in the lecture, then you are exhibiting selective attention
Indicate whether this statement is true or false
Lithium and certain anticonvulsants are the only drugs that can be effective for the treatment of bipolar disorder
a. True. b. False.