Correlation Studies

• A correlational study is one that is designed to determine the correlation, or degree of relationship, between two traits, behaviors, or events.
• When two things are correlated changes in one are associated with changes in another.
• In a correlational study, selected traits or behaviors of interest are measured first.
• Correlation does not mean causation but correlational data may serve as the basis for new experimental hypotheses.
• The Pearson Product Moment Correlation Coefficient (r) is the most commonly used procedure for calculating simple correlations.
• When r is computed, three general outcomes are possible: a positive

  relationship, a negative relationship, or no relationship
• The sign (plus or minus) tells us the positive or negative direction of the relationship.