RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE
CORRELATION AND EXPERIMENTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -False. It is not necessary that a positive correlation between variables implies a causal relationship among them.
Detailed explanation-2: -The value of correlation between any two variables ranges from-1 to +1. If there is a very strong negative correlation then the value of correlation is close to-1 but greater than-1. On the other hand, if there is a very strong positive correlation then the value of correlation is close to 1 but less than 1.
Detailed explanation-3: -Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables. A correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable.
Detailed explanation-4: -Even if there is a correlation between two variables, we cannot conclude that one variable causes a change in the other. This relationship could be coincidental, or a third factor may be causing both variables to change.
Detailed explanation-5: -When independent variables are highly correlated, change in one variable would cause change to another and so the model results fluctuate significantly.