Research Designs & Experimental Methods

Research Designs & Experimental Methods

• ABAB Design: A single-subject experimental design that includes a baseline period (A), a treatment period (B), a return to baseline (A), and a second treatment (B) to establish treatment effects.

• Counterbalanced Design: A method to control for order effects in repeated measures designs by varying the order of conditions across participants.

• Double-Blind Design: Neither the participants nor the experimenters know who is receiving the treatment to reduce bias.

• Interrupted Time-Series Design: A quasi-experimental design measuring a single group repeatedly before and after a treatment/intervention.

• Latin Square Design: A design used to control for order and sequence effects in repeated measures with multiple treatments.

• Matched Subject Design: Participants are matched on certain variables to control for confounding factors before being assigned to groups.

• Multiple Baseline Design: A single-subject design where treatment is introduced at different times across behaviors, settings, or subjects.

• Single-Subject Design: A research design that focuses on the responses of a single participant.

• Solomon Four-Group Design: A true experimental design that controls for pretesting effects by using four groups with varying exposure to pretests and treatments.