Review: Chapter 2 (Psychology)
- Scientific method refers to a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.
- A hypothesis is an educated guess, based on observation. Usually, a hypothesis can be supported or refuted through experimentation or more observation. A hypothesis can be disproven, but not proven to be true.
- A scientific theory summarizes a hypothesis or group of hypotheses that have been supported with repeated testing. A theory is valid as long as there is no evidence to dispute it. Therefore, theories can be disproven.
- Law is a concise verbal or mathematical statement of a relation that expresses a fundamental principle of science.
- Operational definition is a very clear and very precise explanation of the items being measured or the terms that are used to ensure comprehensible knowledge of the terminology.
- Informed consent is a concept in the scientific community which supports the idea that participants in a study should be fully informed of the procedures and situations that they will come across with on the course of the study.
- Descriptive research describes data and characteristics about the population or phenomenon being studied. This research answers the questions who, what, where, when and how…
- Correlation research is a statistical measure of a relationship between two or more variables, gives an indication of how one variable may predict another.
- A placebo is a sham or simulated medical intervention.
- Methods of descriptive research include: archival research, naturalistic observation, survey research, and case study.
I hope this helps you on your next quiz. 
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