What is the difference between the control group and the experimental group in an experimental study?
The experimental group receives the treatment or condition being studied, while the control group does not receive it or receives a comparison condition. Their outcomes are compared to assess the treatment’s effect.
Compare and contrast extraneous variables with confounding variables.
Both extraneous and confounding variables are factors other than the independent variable that may affect the dependent variable. An extraneous variable is a potential outside influence. It becomes a confounding variable when it systematically varies with the independent variable, making it difficult to tell whether the independent variable or the other factor caused the results.
Which of the following is an example of convenience sampling?
Describe the difference between convenience sampling and quota sampling.
Convenience sampling selects participants who are easiest to reach. Quota sampling also uses accessible participants, but the researcher selects enough people from specified categories to meet predetermined quotas.
The control group in an experimental study will __________.
Which of the following is a disadvantage of conducting a laboratory experiment?
What is the difference between an independent and a dependent variable?
The independent variable is the factor a researcher manipulates or uses to define groups. The dependent variable is the outcome measured to determine whether it changes in response to the independent variable.
Read the hypothesis below and answer the question that follows. Individuals who smoke will have a higher frequency of developing cancer later in life. Which of the following would not be a potential extraneous variable for the stated hypothesis?
Explain the reason why random sampling is preferred in psychological studies.
Random sampling gives members of the target population a chance of being selected, helping reduce selection bias and produce a more representative sample. This makes it more reasonable to generalize the study's findings to the broader population.
Which of the following statements about extraneous variables is not accurate?
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