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Related Concept Videos

Bias01:22

Bias

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Bias refers to any tendency that prevents a question from being considered unprejudiced. In research, bias occurs when one outcome or answer is selected or encouraged over others in sampling or testing. Bias can occur during any research phase, including study design, data collection, analysis, and publication.
In statistics, a sampling bias is created when a sample is collected from a population, and some members of the population are not as likely to be chosen as others (remember, each member...
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Bias in Epidemiological Studies01:29

Bias in Epidemiological Studies

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Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:  
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Sampling Plans01:23

Sampling Plans

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Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
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Surveys02:16

Surveys

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Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
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Stratified Sampling Method01:16

Stratified Sampling Method

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
To choose a stratified sample, divide the population into groups called strata and then take a...
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Randomized Experiments01:13

Randomized Experiments

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The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
Simple...
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Recruitment Strategies Bias Sampling and Shape Replicability.

Thomas I Vaughan-Johnston1, Faizan Imtiaz2, Gabriella Avila Patro3

  • 1Cardiff University, UK.

Personality & Social Psychology Bulletin
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This summary is machine-generated.

Researchers found that how study participants are recruited can influence study outcomes and replication success. Recruitment methods may bias participant selection, affecting psychological research findings.

Keywords:
materialismmetasciencerecruitmentreplication

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Area of Science:

  • Psychology
  • Research Methodology

Background:

  • Replication of psychological research is a significant concern within the field.
  • Heterogeneous populations are known to affect replication success, but recruitment strategies are often overlooked.
  • Recruitment methods can introduce bias in participant samples and influence study results.

Purpose of the Study:

  • To investigate how recruitment strategies impact participant selection and replication success in psychological research.
  • To examine the differential appeal of various recruitment strategies based on participant motivations.
  • To determine if recruitment strategies can shape the outcomes of replication studies.

Main Methods:

  • The study involved North American university students (Ntotal = 1,009) across several experimental paradigms.
  • Experiment 1 manipulated recruitment strategies (e.g., mentioning cash, credit, fun, narrative) to assess appeal to different motivations.
  • Experiments 2-3 analyzed how different recruitment strategies affected participant motivation and replication success.

Main Results:

  • Subtle changes in recruitment strategies appealed differently to individuals with experiential versus reward-based motivations.
  • The motivational profiles of participants who showed up were biased by the recruitment strategies employed.
  • Recruitment strategies sometimes influenced the success rates of replication studies.

Conclusions:

  • Recruitment strategies can significantly bias participant samples in psychological research.
  • The choice of recruitment method can impact the replicability of psychological findings.
  • Researchers should carefully consider recruitment strategies to enhance the reliability of psychological research.