Experiment Design

Question 1

Independent Group meaning

Answer 1

Participants take part in only one condition.

Question 2

Repeated Measures meaning

Answer 2

Participants take part in both experimental and controlled conditions.

Question 3

Matched Pairs meaning

Answer 3

Participants for experimental group partner will participants who are similar (age, sex, character, brain disfunction …) in the controlled group.

Question 4

Independent Group: positives

Answer 4

1. Distributes variables evenly
2. Only doing 1 experiment= avoid boredom
3. Avoid order effects.

Question 5

Independent Group: negatives

Answer 5

1. Large number of participants needed
2. Cannot control effects (different characters= confounding variable)

Question 6

Repeated Measures: positives

Answer 6

1. Fewer participants needed.
2. Minimise participant variables (characteristics don’t matter).

Question 7

Repeated Measures: negatives

Answer 7

1. Order effects= may do worse 2nd time because of boredom effect).
2. demand characteristics (repeating conditions).

Question 8

Matched Pairs: positives

Answer 8

1. Avoid order effects
2. Minimise participant variables (same characteristics= match).

Question 9

Matched Pairs: negatives

Answer 9

1. Difficult to achieve good match
2. Need a large group to obtain match
3. Not completely eliminate variables.