Experimental Design

Question 1

Independent groups

Answer 1

Rsch where ppts take part in one condition only so two or more groups are used for the different conditions

Question 2

Independent groups strengths

Answer 2

Eliminates problem of order effects as ppts only take part in one condition

Question 3

Independent group weakness

Answer 3

Individual differences between ppts could effect the results (Matched pairs)

Question 4

Matched pairs

Answer 4

Rsch where ppts are matched for relevant characteristics e.g. Age, gender, IQ. Then each group does one test/condition.

Question 5

Matched pairs strength

Answer 5

Eliminates problems with individual differences as ppts are matched on key characteristics

Question 6

Matched pairs weaknesses

Answer 6

Difficult and time consuming requires reliable and valid procedures

Question 7

Repeated measures

Answer 7

One group of ppts takes part in all conditions in the study. This group is the only group of ppts used in the rsch.

Question 8

Repeated measures strengths

Answer 8

Bc same ppts take part in both tests/conditions there are no individual differences between ppts

Question 9

Repeated measure weakness

Answer 9

Order effects occur due to practice, tiredness and/or boredom

Question 10

Practice effects

Answer 10

Ppts having taken part in one condition may perform better in the second condition bc they know the task

Question 11

Order effects

Answer 11

The ppts may become bored or tired during the second condition which affects rsch findings

Question 12

Counter balancing

Answer 12

Groups of ppts is divided one group does condition A before condition B, while the other group does condition B before condition A

Question 13

Individual differences/ppt variables

Answer 13

Characteristics of ppts which may influence the way they perform in a condition e.g. IQ