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IRCT20230513058161N1 IRCT 2023-07-19 Shiraz University of Medical Sciences The effects of affective expectations on anhedonia among patients suffering from major depression disorder The effects of affective expectations on affective experience and anhedonia among anhedonic patients suffering from major depression disorder 2023-02-09 anticipated 40 Complete https://irct.ir/trial/70082 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Randomization description: Random allocation of patients to intervention and control groups by lottery. For this purpose, we prepare two sheets and write "intervention" on one and "control" on the other. Then, upon each patient's visit, he/she is asked to pick one of the sheets randomly, and based on this, the patient is assigned to the intervention or control group. It is continued in the same way for other patients, Blinding description: The general design of the experiment is explained to the participants, but the subject does not know which group will be placed in. In this way, the general objectives of the research are explained to the subjects before the implementation of the research: In this research, we intend to investigate the symptom of anhedonia in major depressive disorder using psychological interventions. However, subjects are not told which of the experimental or control groups they have been placed in. N/A Major Depression Disorder. Intervention 1: Intervention group: induction of positive expectations. Individuals in this group will be given a very positive description of the movie they are about to see, on the basis that the movie will be very enjoyable, such as: "This movie you are about to see is one of the best movies I've ever seen." It is a popular comedy that is very enjoyable. The aim of this statement is to induce excitement and positive emotion towards watching the clip in order to increase the interest of the person in watching the clip. Intervention 2: Control group: The people of this group will be given an explanation about the movie, which only explains the events and happenings in the movie without using any special emotional load. Yes - There is a plan to make this available What will be shared: All potential data can be shared in SPSS file format after de-identifying people. When: Access start 6 months after the results publication To whom: The data will be available to researchers working in academic and scientific institutions Conditions: The necessary conditions for sending a request to access data or documents are email to the corresponding author. Only statistical analyzes similar to those performed in the present study are allowed, including independent t-student tests and multivariate analysis of variance tests. Where to obtain: Email to the corresponding author How to obtain: Applicants can send their request via e-mail to the responsible author, then within a maximum period of one month, the corresponding author will send them the required documents or files. Comments:
public Somayeh Daneshvar
Hafez Hospital, Chamran Blvd
Shiraz Iran (Islamic Republic of) 7194634786 +98 71 3612 8351 somayedaneshvar@sums.ac.ir Shiraz University of Medical Sciences scientific Somayeh Daneshvar
Hafez Hospital, Chamran Blvd
Shiraz Iran (Islamic Republic of) 7194634786 +98 71 3612 8351 somayedaneshvar@sums.ac.ir Shiraz University of Medical Sciences Iran (Islamic Republic of) Iran (Islamic Republic of) Initial diagnosis of major depressive disorder with anhedonia Age range from 18 to 65 years 18 years 65 years Both The presence of comorbid disorders, including substance abuse, psychotic disorders, bipolar disorder, anxiety disorders, and psychotic symptoms. Active suicidal ideation History of head injury or neurological diseases F32.2 Severe depressive episode without psychotic symptoms Treatment - Other Placebo Intervention group: induction of positive expectations. Individuals in this group will be given a very positive description of the movie they are about to see, on the basis that the movie will be very enjoyable, such as: "This movie you are about to see is one of the best movies I've ever seen." It is a popular comedy that is very enjoyable. The aim of this statement is to induce excitement and positive emotion towards watching the clip in order to increase the interest of the person in watching the clip. Control group: The people of this group will be given an explanation about the movie, which only explains the events and happenings in the movie without using any special emotional load. Anhedonia. Timepoint: Before and after the intervention. Method of measurement: Positive Valence Systems Scale-21 questionnaire. Affective Experience. Timepoint: Before and after the intervention. Method of measurement: Affective Experience questionnaire. Probabilistic reward Learning. Timepoint: Before and after the intervention. Method of measurement: Probabilistic reward task. Shiraz University of Medical Sciences Approved 2022-12-04 Ethics Committee of Shiraz University of Medical Sciences 5th floor, Shiraz University Central Building, Islamic Republic Blvd, Shiraz Fars Iran (Islamic Republic of)