Every member of the population has equal chance of being chosen. Identifying everyone in target population and selecting particants in a fair manner.
1 of 6
Negatives Random
However, it relies on all participants being available. If they're not, then it's not truly random. There is also a possibility of chance bias.
2 of 6
self- selected/ Voulenteer sampling
Particapents becoming part of study, through volunteering when asked/reply to advert
3 of 6
Negatives Voulenteering
There is a potential bias from helpful or interested people, or bias depending on where you advertised.
4 of 6
Oppertunity Sampling
Most used by psychology students. Taking sample from those available at the time of the study.
5 of 6
Negatives Oppertunity
Most of the population is excluded. There's a change of possible unconscious experimenter bias. Some participants may like helping, potentially causing a bias of helpful people.
6 of 6
Other cards in this set
Card 2
Front
However, it relies on all participants being available. If they're not, then it's not truly random. There is also a possibility of chance bias.
Back
Negatives Random
Card 3
Front
Particapents becoming part of study, through volunteering when asked/reply to advert
Back
Card 4
Front
There is a potential bias from helpful or interested people, or bias depending on where you advertised.
Back
Card 5
Front
Most used by psychology students. Taking sample from those available at the time of the study.
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