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A researcher finds a correlation between self esteem and shyness is -0.50, which is significant for his sample. Interpret this correlation.

What does a correlation coefficient tell us? Why are correlation coefficients useful when assessing reliability?

What are the 2 ways in which researchers assess the reliability of their measures? Be sure you understand the difference among these 2 approaches to reliability.

What is validity with respect to a research project? Discuss the different types.

What is validity with respect to the measurement of a psychological construct?

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