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Some studies have indicated that neurofeedback may be an effective treatment for ADHD. Read excerpts from the research published in The Lancet Psychiatry and answer the questions that follow. (Source: Schönenberg et al., "Neurofeedback, sham neurofeedback, and cognitive-behavioral group therapy in adults with attention-deficit hyperactivity disorder: A triple-blind, randomised, controlled trial, "The Lancet Psychiatry, vol. 4 [September 2017]: \(673-684\) ) Methods: We did a concurrent, triple-blind, randomised, controlled trial using adults with ADHD, aged 18 to 60 years. Participants were randomly assigned to three groups: a neurofeedback group which received 30 true neurofeedback sessions over 15 weeks, a sham neurofeedback group which received 15 sham (fake) followed by 15 true neurofeedback sessions over 15 weeks, or a meta- cognitive group therapy group which received 12 sessions over 12 weeks. The primary outcome was symptom score on the Conners' adult ADHD rating scale, assessed before treatment, at midtreatment (after 8 weeks), after treatment (after 16 weeks), and 6 months later. Results: Self-reported ADHD symptoms decreased substantially for all treatment groups between pretreatment and the end of 6 month follow-up, independent of treatment condition. There were no significant differences in outcomes between any of the groups. a. Identify the treatment variable and the response variable. b. Was this a controlled experiment or an observational study? c. Based on this study, would you agree that neurofeedback may be an effective treatment for ADHD? Why or why not?

Step by step solution

01

Identification of Treatment and Response Variables

In this study, the treatment variables are the three different methods applied to patients: neurofeedback, sham neurofeedback followed by real neurofeedback, and metacognitive group therapy. The response variable is the change in symptom score on the Conners' adult ADHD rating scale.

02

Determine the Study Type

To answer the second question, the method utilized in the study should be analyzed. Given that the participants were randomly assigned to different treatment groups, this is an example of a controlled experiment as conditions were deliberately imposed to observe their effects.

03

Evaluate Neurofeedback's Effectiveness

Finally, to evaluate the effectiveness of neurofeedback treatments, it's essential to look at the results of the study. The study's findings show that self-reported ADHD symptoms decreased substantially in all treatment groups and no significant differences in outcomes could be found among the groups. So, based on this study, we could infer that neurofeedback may be an effective treatment for ADHD, though it's not necessarily more effective than other treatments included in the study.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Controlled Experiment

When it comes to understanding scientific research, it is essential to distinguish between various types of studies. A controlled experiment is a research methodology where the scientist manipulates one variable (the independent variable) while maintaining control of all other variables to observe its effect on a subject. In the context of the exercise regarding ADHD treatment, the researchers conducted a triple-blind, randomized, controlled trial. This design means that neither the participants, the experimenters, nor the analysts knew who was in which treatment group, eliminating bias and establishing a clear causal relationship between the treatments and the outcomes.

In this study, adults with ADHD were randomly assigned to different treatment groups, such as true neurofeedback, sham neurofeedback followed by true neurofeedback, and metacognitive group therapy. This rigorous approach allows for a detailed comparison of therapeutic effectiveness. The hallmark of the controlled experiment is this systematic manipulation and control, which is critical to understanding its outcomes and inferring possible effectiveness of treatments for ADHD.

Neurofeedback

The application of neurofeedback as a treatment for ADHD is a fascinating area of psychophysiology. Neurofeedback is a form of biofeedback that uses real-time displays of brain activity—typically through electroencephalography (EEG)—to teach patients self-regulation of brain function. By learning to alter their brainwaves, individuals can potentially improve their concentration and reduce ADHD symptoms. The study from The Lancet Psychiatry aimed to determine the effectiveness of neurofeedback compared with a sham (fake) procedure and metacognitive therapy.

While the term might sound complex, the methodology behind neurofeedback is quite straightforward: Individuals receive feedback about their brainwaves and learn to produce certain wave patterns associated with focus and calm. Think of neurofeedback as a kind of mental training session where the brain is the muscle being exercised. This therapy has the potential to be a non-invasive way to address the core symptoms of ADHD, and understanding the true impact of such treatments is key for those seeking alternatives to medication.

Metacognitive Therapy

While neurofeedback targets the physiological aspects of ADHD, metacognitive therapy (MCT) addresses cognitive processes. MCT is a form of cognitive behavioral therapy that focuses on modifying thinking patterns that contribute to an individual's psychological distress. It's predicated on the idea that by changing one's thoughts, one can change their feelings and behaviors. For ADHD patients, MCT may involve strategies for planning, organization, and problem-solving.

In the study at hand, MCT was administered over 12 weeks, and its effectiveness was compared to neurofeedback. The participants may have learned to better manage time, resist distractions, and utilize planning techniques to mitigate symptoms of ADHD. While MCT might not influence brainwave patterns as neurofeedback does, it equips individuals with mental tools to foster a more organized mindset, and hence, this method also demands a thorough assessment regarding its efficiency in treating ADHD symptoms.

Conners' Adult ADHD Rating Scale

To evaluate the results of treatment for ADHD effectively, researchers must employ a reliable and valid measurement tool. The Conners' Adult ADHD Rating Scale (CAARS) is often utilized for this purpose. This psychometric scale assesses the severity and frequency of ADHD symptoms in adults. The CAARS can encompass various forms, including self-reports or observer-reports, which can be filled out by a partner, parent, or clinician.

The scale includes a broad range of items that reflect ADHD symptoms such as inattention, hyperactivity, and impulsivity. In the given study, it was used to measure the primary outcome—that is, the change in symptom score. Since all groups reported a substantial decrease in ADHD symptoms with no significant difference between treatment conditions, the role of the CAARS as a measurement tool is underlined in this scenario. It offers a systematic and standardized way to gauge treatment efficacy and facilitates comparisons across different therapeutic approaches.