Research Methods - Lesson 4

What does a correlation coefficient of 0 indicate?

• Strong positive correlation

• Strong negative correlation

• No correlation

• Medium correlation

Which of the following describes a positive correlation?

• As one variable increases, the other decreases

• As one variable increases, the other remains constant

• As one variable increases, the other also increases

• As one variable decreases, the other increases

What is the term used to describe the strength of a correlation?

• Correlation index

• Correlation coefficient

• Correlation factor

• Correlation ratio

What does a correlation coefficient of -1 signify?

• No correlation

• Strong positive correlation

• Strong negative correlation

• Medium correlation

What is one advantage of using correlation in psychological studies?

• It establishes causation between variables

• It allows for precise measurement of the relationship strength

• It eliminates all external variables

• It predicts future outcomes with certainty

What is a major disadvantage of correlational analysis?

• It can demonstrate cause and effect.

• It can detect curvilinear relationships.

• It cannot demonstrate cause and effect.

• It can manipulate variables.

What does a correlation fail to detect that an experiment can?

• Linear relationships

• Curvilinear relationships

• Independent variables

• Dependent variables

In an experiment, what is manipulated to observe its effect?

• Dependent variable

• Extraneous variable

• Independent variable

• Co-variable

What can an experiment establish that a correlation cannot?

• Relationship

• Cause and effect

• Co-variables

• Extraneous variables

Why might a correlation between two variables be misleading?

• It always shows a direct cause.

• It ignores extraneous variables.

• It may involve a third unknown variable.

• It always predicts future outcomes.