correlations (RM)

Question 1

what are co-variables?

Answer 1

a continous variable that is not part of main experiment manipulation but has an effect on the dependent variable

Question 2

what is a positive correlation?

Answer 2

where both variables move in the same direction

Question 3

what is a negative correlation?

Answer 3

where one variable increases while the other decreases

Question 4

what is the correlation coefficient?

Answer 4

a mathemtatical representation of to what degree two results are related or linked

Question 5

what is a correlaton?

Answer 5

a method that researches the relationship between two variables without manipulation

Question 6

1. what does the correlation coefficient range from?
2. what do the numbers mean?

Answer 6

-1 to +1

+1= perfect positive correlation
-1= perfect negative correlation

Question 7

what’s the difference between correlations and experiments?

Answer 7

experiemental designs require the manipulation of the iv, whereas correlations do not

Question 8

why do correlations not show causations?

Answer 8

correlations do not show which co-variable led to the change in another co-variable

Question 9

what is a concordance rate?

Answer 9

the percentage figure of the likelihood of twins having the same trait

Question 10

what are the strengths of correlations?

Answer 10

they…
- allow us to investigate unethical situation
- control for participant variables
- are reliable
- can lead to new research
- use numerical and secondary data = objective and valid

Question 11

what are the weaknesses of using correlations?

Answer 11

• can’t be used to find cause and effect
• there’s problems with using secondary data = statistics containing sensitive topics may make research unethical