Unit 2

Question 1

Correlation research

Answer 1

Measuring degree between 2 or more variables
Direction, positive up or down, negative side ways
Magnitude, range from -1(strong negative correlation) +1 (strong positive correlation) 0 (no association)

Question 2

Issues with correlation research

Answer 2

Third variable problem, could be another reason
Spurious correlation, between 2 variables not related, but increase at the same time

Question 3

Ethics

Answer 3

Research ethics board (REB)

Question 4

Experimental research types

Answer 4

Random assignment to research groups
Increased experimental control
Designs
Experimental research designs
Quasi-experimental designs

Question 5

Designs

Answer 5

Between subjects design, compare performance

Question 6

Experimental research designs

Answer 6

Within subject designs, same participants experience all treatments.

Question 7

Quasi-experimental research designs

Answer 7

Groups compared are selected based on predetermined characteristics. No random assignment.

Question 8

Null hypothesis

Answer 8

No significant differences, any observed could be from chance.

Question 9

Experimental/alternative hypothesis

Answer 9

There is a significant difference between groups (not due to chance).

Question 10

Statistical significance

Answer 10

Probability of chance, rather then experimental manipulation.
Over 5% (p>0.5) results considered non-significant.
Less than 5% (p<0.5) results considered significant.