You design a study to evaluate the effect of a new treatment for an anxiety disorder.  In the study, one group of participants (Group 1) receive the new treatment for 1 hour per week, for 8 weeks. Another group of participants (Group 2) receive nothing for 8 weeks, they are waiting to receive the treatment later.  Before the treatment and after the treatment, you measure the level of anxiety in both groups.  At the end of the treatment, you find that both groups improved slightly, and to the same degree.  What is your conclusion? Group of answer choicesboth groups got better as a result of placebo effectsthis is not possible, there was a mistake in the designthe treatment was effective for Group 1the treatment was effective for both groupsboth groups got better as a result of time passing

You design a study to evaluate the effect of a new treatment for an anxiety disorder.  In the study, one group of participants (Group 1) receive the new treatment for 1 hour per week, for 8 weeks. Another group of participants (Group 2) receive nothing for 8 weeks, they are waiting to receive the treatment later.  Before the treatment and after the treatment, you measure the level of anxiety in both groups.  At the end of the treatment, you find that both groups improved slightly, and to the same degree.  What is your conclusion?

You discover that a few of the psychotherapists in the clinic have decided to try out the new therapy, while others who treat similar patients have chosen to stick with the normal protocol. You can use these pre-existing groups to study the symptom progression of the patients treated with the new therapy versus those receiving the standard course of treatment. Although the groups were not randomly assigned, if you properly account for any systematic differences between them, you can be reasonably confident any differences must arise from the treatment and not other confounding variables. This is an example of:Group of answer choicesQuasi-experimental designABA designObservational StudyTrue Experimental design

A researcher finds 60 people who are experiencing depression. The researcher then splits them into two groups at random. One group is given an antidepressant and the other group is given a sugar pill (but they think they are getting an antidepressant). The antidepressant would be considered the______ and the group who receives the sugar pill would be considered the ______.Group of answer choicesPlacebo/Experimental groupIndependent variable/Control group Dependent variable/Control group Independent variable/Experimental group

To study the efficacy of a specific treatment for a particular psychiatric disorder, researchers will often employ a double-blind, placebo-controlled experiment. A double-blind study means that neither the participants nor the researchers know which participants are receiving the placebo, and which participants are receiving the treatment. These studies are designed to compare the results of the introduced treatment with that of a placebo on two groups of randomly selected patients.In the field of psychiatric drug development – also known as psychopharmacological drug development – placebo studies pose a significant problem in that they often result in negative findings. These are trials in which researchers have failed to demonstrate the superiority of the treatment over the placebo condition, and therefore pose a range of issues surrounding the validity of clinical drug development trials. The larger the placebo response, the more difficult it is to prove that an experimental treatment is effective.Describe what is meant by the term ‘placebo problem’ and explain how this can be problematic for psychopharmacological drug developers.

Which of these is not a reason for using a placebo?A.To have a control group to test the drug's effectiveness against a diseaseB.To determine which of two pills is a better choice for treating a diseaseC.So that the effect of a patient's mind is taken into account in the drug testingD.So that all patients will believe their disease is being treated