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 musicb. the students' test scores
c. the amount of time allowed for the studying
d. Silence
The amount of time allowed for studying would be the extraneous variable because it is undesirable but does affect the overall outcome of the experiment.
The presence or absence of music are actually involved in the experiment itself.
The students' test scores are the outcome of the experiment.
Silence is also involved in the experiment itself and not the outcome.
Science
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- (Blank) 1995 observed changes in neuromuscular performance in a study of 90 healthy young males with delays in FFA . With one adjustment there was a reported 38% reduction in feed forward latency. fill in the blank?
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- 1. articular overstress 2. instability 3. episodic fixation 4. stabilization who made this model?
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- What does this describe "after this therefore because of this. one event happens before another therefore the later is caused by the first.."?
- What does this describe, "a patient presents with what appears to be visceral symptoms but are actually caused by dysfunction in somatic structures."?
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- Who demonstrated that cervical dysfunction may impact on joint position sense?
- What does this describe, "formation of a clear space or bubble was not the source of joint cracking but rather was caused by collapse of the bubble"?