Chapter 3

Research Methods in Clinical Psychology

Set C

Demand Characteristics

The features of an experiment which are the result of participants acting according to what they believe is expected of them.


The defining and categorizing of events and relationships relevant to psychopathology.

Dependent Variable (DV)

The outcome variable that is measured in an experiment.

Epidemiological Studies

Research which takes the form of a large-scale survey used to study the frequency and distribution of disorders within specific populations over a specified period of time.


Treatments whose efficacy has been proven through research using the scientific method.


The act of deceiving.

Double Blind

An experimental procedure in which neither the experimenter nor the participant is aware of which experimental condition the participant is in.

Effect Size

An objective and standardized measure of the magnitude of the effect observed in a research study.