The block randomization method is performed by the statistical consultant as follows: randomization is performed in three groups: acceptance and commitment therapy, unified transdiagnostic treatment and control. First, a list of eligible individuals is provided and coded. In block randomization, the number of participants in all groups will be very close together by making blocks of sequences so that the same number of participants are assigned to study groups within each group. We first code the groups in Latin letters as follows: A = acceptance and commitment therapy, B = unified transdiagnostic treatment, and C = control group. In this study with three groups A, B and C, we create the following six groups and assign a number from 1 to 6 to each group: ABC-ACB-BAC-BCA-CAB-CBA, Then, using the table of random numbers, we contract that if the numbers 1, 2, 3, 4, 5, and 6 appear in order, one of these blocks will be selected, and if another number appears, we will assume it to be void and move on to the next selection. In fact, we have obtained a random sequence of numbers with a table of random numbers that for each number we consider the desired order of assignment. In this way, the number of people in the groups will be approximately equal.