RCT Phases
CH.17 - Treatment of Psychological Disorders
RCT Phases
Preparation Phase
Define disorder: A clear definition is essential to understand the condition being treated.
Train diagnosticians: Ensure that those assessing the disorders are well-equipped with tools and knowledge to identify them accurately.
Develop treatment manual: A comprehensive guide outlining treatment protocols to standardize interventions.
Train therapists: Provide therapists with the necessary skills and techniques to administer treatment effectively.
Select outcome measures: Determine the metrics by which treatment efficacy will be assessed.
Screening Phase
Pick qualified clients: Identify participants who meet the criteria for the study and are suitable for the specific treatments being tested.
Administer baseline measures: Collect initial data regarding the severity of symptoms and other relevant metrics before treatment begins.
Treatment Phase
Randomize to therapy vs control: Randomly assign clients to either the treatment group or a control group to ensure unbiased results.
Monitor therapist competence/adherence: Regularly check that therapists are implementing the treatment methods correctly and effectively.
Outcome Assessment
Re-measure symptoms: Reassess clients to check for changes in symptoms after the intervention.
Evaluate relationship quality: Assess the quality of the therapeutic alliance and its impact on treatment outcomes.
Assess client attitudes and emotions: Evaluate how clients feel about therapy and their emotional responses during the treatment process.
Follow-Up Phase
Reevaluate functioning: After treatment, reassess clients to determine long-term effectiveness and functioning.
Collect relapse data: Gather information on any recurrence of the disorder after treatment ends.
Meta-Analysis
Definition: A statistical method combining data from multiple studies to derive overall conclusions about treatment effectiveness.
Effect size: The percentage of clients who show improvement beyond the average participant in a control group.
Key Studies
Smith & Glass (1977)
Analyzed 375 studies involving 25,000 treated individuals compared to 25,000 controls.
Findings: Treatment clients fared better than 75% of those who did not receive treatment.
Grissom (1996)
Reported a 70% improvement rate in treated individuals compared to no-treatment groups.
Are Therapies Equally Effective?
Dodo Bird Verdict
Concept: The hypothesis that all therapies yield similar results and are equally effective, encapsulated in the saying that "all must have prizes."
Observation: Most therapies show similar average outcomes, however…
Debate on Effectiveness
Complex Reality:
While the Dodo Bird verdict might hold true in some cases, it oversimplifies the reality of treatment outcomes.
Differing effectiveness is noted; specific therapies may work better for certain disorders compared to others.
Survey Research: The Consumer Reports Study
Participant Feedback
Prior therapy experiences:
42% reported feeling helped "a lot."
44% felt helped "somewhat."
Overall, 89% of participants expressed satisfaction with their therapy experience.
Research Methodology
Strengths:
A large sample size from real-world settings enhances the validity of findings.
Weaknesses:
Lack of control groups limits the research.
Self-selection bias may skew results, as those who choose to participate might differ systematically from those who do not.
Outcomes were self-reported, potentially affecting reliability due to subjective biases.
Factors Affecting Treatment Outcome
Client Variables
Openness: Acknowledges the client's willingness to engage in therapy and pursue personal change.
Self-relatedness: The ability of clients to understand and articulate their own thoughts and emotions, leveraging insight for improvement beyond therapy sessions.
Nature of the problem:
Specific phobias tend to respond better to behavioral exposure techniques.
Existential problems usually improve with humanistic or psychodynamic therapy approaches.
Therapist Variables
Important traits:
Empathy: The capacity to understand and share the feelings of another.
Unconditional acceptance: Valuing clients without conditions.
Genuineness: Being authentic in the therapeutic relationship.
Strong therapeutic alliance: A positive and trusting relationship fosters better outcomes.
Negative Effects:
A poor therapeutic alliance can lead to a deterioration effect, whereby negative feelings such as hostility or rejection can worsen the client's condition.
Technique Variables
Critical components:
Correct selection of methods tailored to clients' needs is crucial for successful treatment.
Techniques should be adjusted to fit the unique requirements and contexts of clients.
Consideration of timing and pacing throughout the therapeutic process.
Common Factors Across Therapies
Shared Elements That Promote Improvement
Trust and faith in the therapist: Essential for establishing the therapeutic alliance.
Plausible explanation of problems: Clients must understand their issues logically to facilitate change.
New perspective on self: Therapy should help clients view themselves in a different, more constructive light.
Safe environment for expression: A supportive context for clients to express their emotions freely is vital.
Practice of new behaviors: Allowing clients to try out new approaches encourages learning and adaptation.
Hope, optimism, self-efficacy: Fostering a belief in the ability to change and improve enhances treatment effectiveness.