Flashcards
Sampling
Flashcards do conjunto (21)
- 1What is random sampling?Everyone in target pop. has equal chance of being picked
Named randomly selected from a sampling frame - 2What are the advanatges of random sampling?Usually provides an unbiased sample
Usually representative - 3What are disadvanatges of random sampling?Can be time consuming to create a sampling frame
- 4What is snowball sampling?Psychologist recruits one partipant and studies them, finds the next participant through them
- 5Advantages of snowball samplingInexpensive
Efficient
Obtains a sample of difficult to locate people - 6Disadvantages of snowball samplingProduces a biased sample e.g. similar characteristics, same age, same place
Not necessarily representative - 7What is opportunity sampling?Researcher selects participant's based on who is most convenient for them
- 8Advantages of opportunity samplingTime and cost-effective
Easy to access large groups of people - 9Disadvantages of oppoortunity samplingCan be impacted by researcher bias
Samples often unrepresentative and biased - 10What is self-selected sampling?Researcher sends out advertisements and participants volunteer themselves
- 11Advantages of self-selected samplingObides by ethical guidelines i.e. consent
usually cost effective
Usually more willing to oblige - 12Disadvantages of self-selected samplingSample may not be representative or could easily be effected by bias
- 13Repeated measures designEach participant is tested in every condition
- 14Advantages of repeated measures designReduces influence of individual differences
Uses fewer p's so cost and time-effective - 15Disadvantages of repeated measures designOrder effects and demand characteristics more likely to influence the study
- 16Indendent measures designParticipants allocated to either experimental or control condition
- 17Advantages of independant measures designNot affacted by order effects or demand characteristics
Less time consuming than matched pairs - 18Disadvantages of independant measures designLarge samples required
Study can be confounded by individual differences - 19Matched Pairs DesignParticipants matched on variables which are relevant to to the study
- 20Advantages of matched pairs designLowers likelihood of demand characteristics and order effects
Controls participant variables - 21Disadvantages of matched pairs designTime consuming to match participants
Impossible to control for all individual differences
Informações
- Descrição
- AS level Psychology (C01) FlashCards sobre Sampling, criado por Zoe Rossall em 11-02-2017.
- Criado por
- Zoe Rossall
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