Evaluation

Question 1

What are limitations of repeated measure design

Answer 1

The order effect
When participants do the second test they may guess the aims of the experiment which can effect their behaviour

Question 2

How do you deal with the limitations of the repeated measure design

Answer 2

Counter balancing

Question 3

what are limitations on the independent groups design

Answer 3

Cannot control participant variables
Need more participants than repeated measure design

Question 4

How to deal with limitations of the repeated measure design

Answer 4

Random allocation

Question 5

What are limitations of matched pairs design

Answer 5

Very time consuming
Not possible to count all participants variables as they’re only allocated on one aspect

Question 6

How to deal with limitations on the matched pair design

Answer 6

Restricting the number of variables to make matching easier
Conducting a pilot study

Question 7

Strengths of lab experiments

Answer 7

High internal validity

Question 8

Limitations of lab experiments

Answer 8

Participant aware if being studied - leads to them finding cues about the aims of study changing their behaviour - lowers ecological validity
IV or DV being operationalised to a degree that isn’t realistic - lowers ecological validity
Participants in unknown setting may change their behaviour- lowers ecological validity

Question 9

What are the strengths of field experiments

Answer 9

Unaware of being observed - don’t change behaviours
Takes place is a natural setting

Higher ecological validity

Question 10

What are limitations to field studies

Answer 10

The IV may lack mundane realism
Can’t control extraneous variables
Ethical issues - cannot get informed consent

Question 11

What are 3 evaluation points for natural and quasi experiments

Answer 11

• no manipulation of the IV
  Lack of control of the IV means we cannot say for sure that the DV was caused by the IV
• Random allocation
  You cannot have random allocation in these experiments meaning you cannot control confounding variables
• Unique characteristics of participant

Question 12

Strengths of opportunity samples

Answer 12

Easiest and quickest

Question 13

Weaknesses of opportunity samples

Answer 13

Biased as drawn from small part of population

Question 14

Strengths of random sample

Answer 14

Unbiased

Question 15

Weaknesses of random sample

Answer 15

Need a list of all members of a population and contact them - takes time

Question 16

Strengths of stratified sample

Answer 16

More representative of the population

Question 17

Weaknesses of stratified sample

Answer 17

Very time consuming as have to identify subgroups then randomly select participants and contact them

Question 18

Strengths of systematic sample

Answer 18

Unbiased as participants are selected using an objective system

Question 19

Weakness of systematic sample

Answer 19

Not truly unbiased unless you select the first person using a random method

Question 20

Strengths of volunteer sample

Answer 20

Gives access to a variety of participants which MAY make it more representative

Question 21

Weaknesses of volunteer sample

Answer 21

Volunteer bias

Question 22

Strengths of the ethical guidelines

Answer 22

The rules and sanctions if the BPS ethical guidelines gives clarity

Question 23

Weaknesses of ethical guidelines

Answer 23

The BPS guidelines are rather general as it’s impossible to cover every scenario.
Guidelines tend to cut off discussions because answers are provided
Researcher has no responsibility and they can say they followed the guidelines

Question 24

3 evaluation points on peer review

Answer 24

• anonymity
  Being anonymous could allow for people who have personal issues or competitions to discredit people’s research
• publication bias
  Tend to prefer positive reviews.
• cannot deal with already publisher research