Welcome to Behaviorbabe
Ethical Advocate for Accurate Application & Dissemination of Behavior Analysis

Welcome to Behaviorbabe

Ethical Advocate for Accurate Application & Dissemination of Behavior Analysis

Single Subject Designs

From Wikipedia, the free encyclopedia

Single-subject design or single-case research design is a research design most often used in applied fields of psychology, education, and human behavior in which the subject serves as his/her own control, rather than using another individual/group. Researchers use single-subject design because these designs are sensitive to individual organism differences versus group designs, which are sensitive to averages of groups. Often there will be large numbers of subjects in a research study using single-subject design, however—because the subject serves as their own control, this is still a single-subject design. These designs are used primarily to evaluate the effect of a variety of interventions in applied research. 

A-B Single Subject Design

A-B-A / Withdrawal Design

A-B-A-B Reversal

behavior to decrease

behavior to increase

Changing Criterion Designs

Multiple Baseline (MBL) Across Participants

Alternating Treatment (Alt-Tx) Design (this is a graph from my dissertation)

Watch a brief tutorial 

Additional Resources