Chapter 2 Review

What is the primary purpose of using a representative sample in psychological research?

• To ensure the sample is large enough
• To accurately reflect the diversity of the population
• To eliminate all forms of bias
• To focus on a specific subgroup

What is a representative sample?

• A group of participants chosen based on convenience
• A small group of participants in a study
• A group of participants selected randomly
• A sample that accurately reflects the characteristics of the population as a whole

Which research method involves observing subjects in a natural setting without interfering?

• Case study
• Survey
• Longitudinal study
• Naturalistic observation

What is the purpose of informed consent in research?

• To protect participants from discomfort and harm
• To provide a debriefing after the study
• To guarantee confidentiality of participants' information
• To ensure participants are compensated for their time

What is a hypothesis?

• A factor that may change in response to manipulations
• A small group of participants in a study
• A measure of the relationship between two variables
• An educated guess about the relationship between two variables

Which research method involves an intensive investigation of one or more participants?

• Case study
• Survey
• Longitudinal study
• Naturalistic observation

What is the purpose of a control group in an experiment?

• To provide a comparison for the experimental group
• To ensure the experiment is conducted ethically
• To manipulate the independent variable
• To measure the dependent variable

What is the placebo effect?

• The measure of a relationship between two variables
• The experimental factor that is manipulated
• The variable that may change in response to manipulations
• A change in a participant's behavior due to the researcher's expectations

What is a longitudinal study?

• A research method that collects data about a group of participants over a number of years
• A research method that collects data from groups of participants of different ages
• A research method that involves observing subjects in a natural setting
• A research method that investigates one or more participants intensively

What is a cross-sectional study?

• A research method that collects data about a group of participants over a number of years
• A research method that collects data from groups of participants of different ages
• A research method that involves observing subjects in a natural setting
• A research method that investigates one or more participants intensively