Experiments: Sampling method

Question 1

What is a strength of self-selecting sampling?

Answer 1

-Easy to obtain
-Already give consent to participate
-More likely to continue for entirety of study

Question 2

What is a strength of opportunity sampling?

Answer 2

-Easy to obtain at the time of the study
-Good way of obtaining target population

Question 3

What is a strength of random sampling?

Answer 3

-Everyone has an equal chance of being selected
-Representative of target population

Question 4

What is a strength of snowball sampling?

Answer 4

Easy to obtain sample (especially if difficult target population)

Question 5

What is a weakness of opportunity sampling?

Answer 5

-Unrepresentative sample
-Researcher bias (when the researcher’s beliefs or expectations influence the research design or data collection process)

Question 6

What is a weakness of self-selecting sampling?

Answer 6

-Unrepresentative sample - unemployed, keen on psychology etc
-Expensive if give money incentive
-Could mean a small sample size

Question 7

What is a weakness of random sampling?

Answer 7

-Everyone has an equal chance of being selected : outliers
-Sometimes hard to ensure all gave an equal chance
-Selected people may not be willing to take part

Question 8

What is a weakness of snowball sampling?

Answer 8

sampling bias and may not be generalisable