Random Sampling - where participants are selected from the sampling frame and everyone has an equal chance of being selected, Opportunity Sampling - where participants are selected at the researcher’s convenience, without knowing any details about the sample in advance, Systematic Sampling - where every nth person on a list is selected by the researcher, e.g. every 3rd house on a street, or every 5th person on a register., Stratified Sampling - where the target group is divided into subgroups (or strata), e.g. by sex, and then the participants are selected randomly from each subgroup., Quota sampling - where the target population is divided into subgroups, e.g. by sex, and the participants are chosen from each subgroup at the convenience of the researcher., Self-selected Sampling - where participants volunteer (select themselves) for research, Snowball Sampling - where participants are initially recruited by the psychologist and then those participants recruit further participants from people they know, Event Sampling - where participants are observed by the psychologist, who records a specific behaviour each time it occurs to create a total score., Time Sampling - where the psychologist observes and records behaviour (such as a score) at specific time intervals,

Sampling techniques

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