The Experimental Method Psychology

The thing that the researcher deliberately changes in an experiment is called the

• Dependent Variable

• Extraneous Variable

• Random Variable

• Independent Variable

How the outcomes of the different conditions (IV) are measured is called the

• Extraneous Variable

• Independent Variable

• Dependent Variable

• Random Variable

Every person in the population has an equal chance of being selected -which sampling method

• Systematic sampling

• Quota sampling

• Volunteer sampling

• Random sampling

in Psychological research, Ethics are about ensuring

• the protection of all participants

• all ethnic groups are considered

• experiments are well planned

• the results are clear

A longitudinal study records info

• as a snapshot of a particular time

• Over a long period of time

• at significant times in history

• at random times in the day

A type of observation conducted in the participants' normal environment without interference from the researchers.

• Controlled observation

• Naturalistic observation

When the variables increase together it is said to have

• Positive correlation

• Negative correlation

Dependent Variable

• Variable in an experiment that represents the measurable response or behavior of the subjects in the experiment.

• Variable in an experiment that is manipulated by the experimenter.

Independent Variable

• Variable in an experiment that is manipulated by the experimenter.

• Variable in an experiment that represents the measurable response or behavior of the subjects in the experiment.

Representative Sample

• A sample that has characteristics that are similar to those in the population.

• Subjects in an experiment who are not subjected to the independent variable and may receive a placebo treatment.

• The entire group of people or animals in which the researcher is interested.

• Study in which the subject do not know if they are in the experimental or the control group.