UNIT 3 VOCABULARY Definitions

Front

Research in which data is collected by observation or survey about some characteristic of the population.

Back

Observational Study

Front

Research in which the researcher separates participants into 2 groups, applies some sort of treatment, then compares the results.

Back

Experimental Study

Front

Something that researchers administer to participants in an experimental study.

Back

Treatment

Front

Measure results in an experimental study.

Back

Variable of Interest

Front

A group in an experimental study that does not receive treatment or does not receive the new treatment.

Back

Control Group

Front

The beneficial effect in a patient following a particular treatment that arises from the patient's expectations concerning the treatment rather than from the treatment itself.

Back

PlaceboEffect

Front

A question that states what a researcher attempts to answer and that guides research design.

Back

Research Question

Front

Generally a statement of 'no effect,' stating that there is no difference between what is claimed and what is measured.

Back

Null Hypothesis (H₀)

Front

A statement that proposes that something is different, incorrect or has changed from what is accepted or claimed.

Back

Alternative Hypothesis (H₁)

Front

The entire collection of items or subjects that are the focus of concern in the study.

Back

Population