Chapter 3

Research Methods in Clinical Psychology

Set G

Positive Correlation

A relationship between two variables in which a high score on one measure is accompanied by a high score on the other.


The number of instances of a given disease or psychopathology in a given population at a designated time.


A statement (usually quantitative) about what will happen under specific conditions, as a logical consequence of scientific theories.


The right of participants to decide not to provide some forms of information to the researcher if they so wish (e.g. their age or sexual orientation).

Prospective Designs

Research which takes measures from the same participants at two or more different times in order to specify the time relationships between variables.

Point Prevalence

The frequency of a disorder in the population at any one point in time.

Prevalence Rates

The representation of incidence by duration of a particular disorder.


A group which provides guidelines for collecting and reporting clinically-relevant systematic reviews.