Child Development 133 
Research Methods in Human Development

Sections 01 & 05
Hembree            Fall, 2012


Correlational Research

I. Correlational strategies

A. Correlational vs. experimental strategies





B. Correlation Coefficients

1. Scatterplots




2. Positive and Negative (inverse) linear relationships








3. Curvilinear relationships






4. Correlation coefficient






II. Problems with interpreting correlations

A. restricted range




B. outliers




C. lack of reliability




D. correlation vs. causation




  • .  third variables (and spurious correlations)



  • partial correlations








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California State University, Sacramento
College of Education
Department of Child Development

Updated: August, 2012