Glossary of Psych Exam 1 - Module 2
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- the whole group you want to study and describe
- the members within a group that you actually study
- random sample
- a sample in which every subject had and equal chance of being chosen
- an organized set of principles that describes, predicts, and explains some phenomenon
- a specific testable prediction often derived from a theory
- observational/naturalistic studies
- A type of research in which the researcher can not influence or manipulate anything, occurs naturally in real world settings
- survey method
- a research method that involves interviewing or giving questionnaires to a large number of people
- case studies
- a type of research that involves making in-depth observations of individual persons
- correlation strengh
- this is indicated by how close the value is to + or - 1.
- correlation direction
- positive or negative relationship
- independent variable
- any variable that the researcher manipulates in an experiment, causes change
- dependant variable
- a variable that is being measured in an experiment, affected.
- control group
- not manipulated, serves as comparison for evaluating the effect of the treatment.
- experimental group
- the group that receives the manipulation in the experiment
- experimenter bias
- when researchers expectations influence outcome
- research participation bias
- participants are influence by how they think they should act
- double blind study
- both the research staff and the participants are ignorant about whether the research participants have received the treatment or a placebo.
- placebo effect
- any effect on behavior caused by the administration of an inert substance or condition, which is assumed to be an active agent.
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