Experimental designs

Question 1

What are the 3 experimental designs?

Answer 1

Independent groups, repeated measures, matched pairs

Question 2

What is experimental design?

Answer 2

How the testing of participants is arranged in relation to different conditions

Question 3

What are independent groups?

Answer 3

Two or more SEPARATE groups of participants that take part in different conditions

Question 4

Independent groups evaluation:

Answer 4

STRENGTH- No order effects (getting bored) as they only take part in one condition. Reduces demand characteristics.
WEAKNESS- More p’s needed to recruit so time and money consuming. Participant variables and individual differences with different p’s.

Question 5

What is repeated measures?

Answer 5

Only ONE group of participants. They take part in both or all conditions.

Question 6

Repeated measures evaluation:

Answer 6

STRENGTH- Fewer participants needed, less chance of participant variables as same p’s are used.
WEAKNESS- higher chance of demand characteristics and order effects (getting bored) as they take part in all conditions

Question 7

What is matched pairs?

Answer 7

Two separate groups of P’s who are matched due to certain characteristics or qualities eg IQ, age, culture. One p from each pair takes part in only 1 condition

Question 8

Matched pairs evaluation:

Answer 8

STRENGTH- less chance of participant variables as they have been paired to be similar, less chance of order effects
WEAKNESS- more p’s needed so more money and time needed. Time consuming to match p’s.