Chapter 3

Research Methods in Clinical Psychology

Set A

ABAB Design

A single-case experiment, similar to the ABA design, with the addition of a second treatment or manipulation stage, providing extra power in demonstrating that any changes in behaviour are explicitly due to the manipulation or treatment.

Analogue Populations

Populations that are usually participants without any mental health problems, which may be human or non-human animals.


A term widely used in psychopathology to describe the causes or origins of psychological symptoms.

Applied Scientist

Someone who is competent as both a researcher and a practitioner.

Case Study

An in-depth investigation of an individual participant.

ABA Design

A single-case experiment which involves an initial baseline stage of observation and measurement of behaviour without any intervention (A), followed by a treatment or manipulation stage (B). A final return-to-baseline stage is then introduced (A).

Analogue Research

Research on healthy, non-clinical populations in order to shed light on the aetiology of psychopathology.

Animal Models

The use of laboratory animals in research to simulate processes comparable to those occurring in humans.