AP Psychology - Experimental design

The factor in an experiment that is deliberately manipulated or changed by the researcher.

• Independent variable

• Dependent variable

• Bias of selection

• Confounding variable

The factor in an experiment that is measured or observed and is expected to be influenced by the independent variable.

• Longitudinal studies

• Control group

• Dependent variable

• Independent variable

1. A factor that is kept constant in an experiment to ensure that only the independent variable is causing the changes observed in the dependent variable.

• Correlational research

• Control variable

• Random sampling

• Longitudinal studies

A group in an experiment that is not exposed to the independent variable, used as a baseline for comparison.

• Dependent group

• Relaxed group

• Independent group

• Control group

The process of selecting a sample from a population in a way that every individual has an equal chance of being chosen.

• Random sampling

• Natural selection

• Selective sampling

• Dependent sampling

When a sample is not representative of the population it's meant to represent due to a non-random selection process.

• Independent selection

• Accurate selection

• Bias of selection

• Selective selection

A type of research that examines the statistical relationship between two or more variables without manipulating them.

• Correlational research

• Lab research

• Independent research

• Dependent research

An uncontrolled variable that could inadvertently influence the dependent variable, making it difficult to determine the true cause of the observed effect.

• Accurate variable

• Controlled variable

• Confounding variable

• Independent variable

Research that involves observing and collecting data from the same subjects over a prolonged period of time.

• Unrelated studies

• Short-term studies

• Independent studies

• Longitudinal studies

Research that collects data from participants at a single point in time or over a very short period.

• Cross-sectional studies

• Longitudinal studies

• Dependent studies

• Bias studies