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In developmental research, which type of design involves studying two or more groups of individuals who differ in age or other characteristics at the same point in time?
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2. Psychology Research
Developmental Designs
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If it is shown that students' grades go down the more hours they spend watching TV, then grades and hours spent watching TV have a _______ correlation.
A
positive
B
negative
C
mild
D
parametric
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Understand the concept of correlation: Correlation is a statistical measure that describes the extent to which two variables are related. It can be positive, negative, or zero.
Identify the relationship described: The problem states that as the number of hours spent watching TV increases, students' grades decrease.
Determine the type of correlation: A negative correlation occurs when one variable increases while the other decreases. In this case, more TV hours lead to lower grades.
Consider the options provided: The options are positive, negative, mild, and parametric. A positive correlation would mean both variables increase together, which is not the case here.
Conclude the type of correlation: Based on the relationship described, the correlation between TV hours and grades is negative, as an increase in TV hours is associated with a decrease in grades.
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