AP PSYCHOLOGY

RESEARCH METHODS THINKING CRITICALLY WITH PSYCHOLOGICAL SCIENCE

THE SCIENTIFIC METHOD AND DESCRIPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How can volunteer bias affect the outcome of a study?
A
It can make others want to volunteer for the study
B
It can invalidate it, if the volunteers hold bias that is counter to the opinions of those who are not part of the study, but are represented by it
C
It can split the results in two
D
It can prove it correct, because volunteer opinions accurately represent everyone in the population
Explanation: 

Detailed explanation-1: -Volunteer bias suggests that those persons who tend to undertake participation in research may not be a fair representation of the general population as a whole. In a study or survey, volunteer bias can lead to researchers arriving at false conclusions.

Detailed explanation-2: -A volunteer bias (or self-selection bias) occurs when individuals who volunteer for a study differ in relevant clinical characteristics from those who do not. The self-selection is a threat for the internal validity of the study if it is related to the exposure and, independently of exposure, to the disease/outcome.

Detailed explanation-3: -Volunteer bias (also called self-selection bias) arises in any research study in which participants choose if they want to be part of the sample. It is a common type of research bias and leads to a sample that is not representative of the population as a whole.

Detailed explanation-4: -There are many potential sources of bias in research. Bias in research can cause distorted results and wrong conclusions. Such studies can lead to unnecessary costs, wrong clinical practice and they can eventually cause some kind of harm to the patient.

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