Correlations

Question 1

Correlational analysis ?

Answer 1

• Used to investigate a link between 2 co variables
• Used when impossible to conduct an experiment(eg;unethical to increase real life exposure to violence)
• cannot Infer cause and effect-no manipulation of the IV.

Question 2

Positive correlation?

Answer 2

An increase in one co variable accompanies an increase in the other

Question 3

Negative correlation?

Answer 3

An increase in one co variable accompanies a decrease in the other

Question 4

What’s used to display data from a correlational analysis ?

Answer 4

Scatter diagrams

Question 5

Reliability of correlations?

Answer 5

+Reliable if measures of both variables are consistent
+Using scientific scales such as volume or time increases reliability
-Measures using self reports lowers reliability

Question 6

Strengths of correlational analysis?

Answer 6

+conducted when experiments would be impractical or unethical
+Demonstrates the presence/Absence of a relationship

Question 7

Weaknesses of correlational analysis ?

Answer 7

• Cannot Infer cause and effect-extraneous variables can be responsible for relationship found
• Used only with variables that can be measured on a scale