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Quota Sampling
Quota sampling is a non-probability sampling technique where researchers recruit subgroups within their sample to mirror the exact proportional representation of those specific subgroups in the broader population. Although it ensures that key demographic segments are represented accurately, it does not involve random selection, which distinguishes it from probability-based stratified sampling.
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Research Methods in Psychology - 4th American Edition @ KPU
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Snowball Sampling
Quota Sampling
Self-selection Sampling
Convenience Sampling
Which of the following best defines non-probability sampling in psychological research?
Match each aspect of non-probability sampling with the statement that best explains its role or limitation within psychological research.
A researcher investigating the relationship between sleep and academic performance recruits participants by asking for volunteers from their own Psychology 101 classes. Because the researcher cannot mathematically specify the chance that any individual student in the entire university population will be selected for the study, this is an example of non-probability sampling.
A researcher studying personality traits recruits participants by handing out surveys at a large national gaming convention. Arrange the logical steps required to analyze and classify this sampling method based on the principles of research design.
What is the primary reason that non-probability sampling is the most common approach used in general psychological research?
In psychological research, non-probability sampling is considered the ideal method for generating perfectly representative population estimates.
A scientist concludes that a new cognitive intervention is universally effective for all adults after testing it only on a convenience sample of volunteers from their own university. When evaluating the validity of this universal claim, a critic would argue that the use of _____ sampling makes it impossible to mathematically specify selection probabilities, thus fundamentally limiting the study's ability to provide a perfectly representative estimate for the entire global population.
Match each psychological research scenario with the specific non-probability sampling technique it exemplifies.
A developmental psychologist recruits participants for a study by placing flyers in local daycare centers. In analyzing the limitations of this study, the researcher must recognize that because non-probability sampling does not rely on structured random selection, it limits the ability to make perfectly representative population _____.
Evaluate a researcher's sampling methodology by arranging the steps in the correct logical sequence to determine if it is a non-probability method and identify its key limitation.
Define non-probability sampling as it is used in psychological research and describe its primary limitation regarding population estimates.
Based on the researchers' methodological choice, identify the category of sampling they are employing and explain why this approach impacts their ability to generalize their findings to the entire student body.
If a psychologist designs a study using the most common sampling approach in general psychological research, what specific mathematical specification will they be unable to make regarding their target population?
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What is a defining characteristic of quota sampling?
A researcher wants their sample of 400 people to mirror the local city's demographic proportions (such as age and gender). Arrange the following steps of the quota sampling process in the correct chronological order.
A psychology researcher conducting a study on mental health access uses quota sampling to ensure their sample is exactly rural and urban to match the state population. If they achieve these exact proportions using a convenience approach, the researcher can conclude that they have eliminated selection bias and created a sample that is methodologically equivalent to a random probability sample.
A psychology research team is evaluating different approaches to sampling for a study on student stress. Match each methodological decision with its corresponding evaluative critique or trade-off regarding the use of quota sampling.
In quota sampling, researchers use random selection to fill the predetermined proportions for each subgroup in the sample.
Which of the following best explains why quota sampling is classified as a non-probability sampling technique, even though its goal is to create a sample that mirrors population demographics?
A psychology researcher wants to study the exercise habits of students and needs their sample of 100 participants to mirror the university's breakdown of 20% athletes and 80% non-athletes. The researcher stands outside the student union and recruits the first 20 athletes and 80 non-athletes who agree to be interviewed. This technique of filling specific subgroup targets through a non-random recruitment process is known as _____ sampling.
A developmental psychology researcher wants to study how parenting styles affect academic stress across different undergraduate year levels. The university student population consists of first-year, second-year, third-year, and fourth-year students. The researcher decides to use quota sampling to obtain a sample of students from the student union building.
Match each student subgroup with the target number of participants that the researcher must actively recruit using a convenience approach to ensure the sample proportions exactly match the population proportions.
A developmental psychology research team is comparing different sampling strategies to study academic anxiety among undergraduate students. They want to rank these strategies based on their methodological rigor—specifically, their ability to control for selection bias and ensure representative subgroups.
Arrange the following sampling designs in order from the highest level of control over selection bias (most rigorous) to the lowest level of control over selection bias (least rigorous).
A research evaluator is reviewing a proposed study on academic stress. The investigator claims that because their quota sample of undergraduates perfectly mirrors the university's demographic distribution of major and gender, the sample has the same external validity as a stratified random sample. The evaluator rejects this claim, pointing out that because quota sampling relies on convenience rather than random selection, the mathematical probability of selecting any individual student is ____, which prevents researchers from calculating the margin of error.