PSYC 403 Lecture Notes - Lecture 2: Randomized Controlled Trial, Clinical Trial, Design Of Experiments
13 May 2018
School
Department
Course
Professor
Empirically Supported Treatments
• Evaluating psychotherapy
o With increases in types of psychotherapy, framework to evaluate psychotherapy
needed to be developed
o Methods
▪ Case studies
• 1-5 clients
• Often done by people in private practice
o Report on the details of their cases
• Some more empirically supported case studies
o ABA design
▪ A- baseline
▪ B- applying the therapy
▪ A- withdraw therapy
▪ Naturalistic studies
• Not putting people into any particular treatment
▪ Quasi- experiments
• Want to compare people in different theapies ut did’t
randomly assign them
• Low internal validity
▪ Randomized controlled trials (RCTs)
• Adopted from medicine
• Experimental design= cause and effect
• Highest level method in this field
• True experimental design
• Randomly assign people and compare the different conditions
• Able to determine cause and effect
• Randomized controlled trial
o 1) Develop the protocol
▪ What is the treatment?
• Comes from a theoretic model
o From armchair theorizing, clinical observation, or basic
psychological research
▪ How will you go about treating them?
• Identify the treatment technique
▪ How will the treatment be administered?
• Needs to be standardized in some way
• Develop treatment manuals
• Train and supervise clinicians
• Ongoing supervision so they maintain fidelity with the treatment
• Beck was the first person to develop manuals and a specific
technique for developing RCTs
o 2) Choose comparison to treatment of interest
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