Assigning people to groups is simple random. After selecting people as samples, a list of them is prepared (For example, 01,02, … ,60), Then, in the random number table, a row and a column are randomly selected and their intersection is determined as the starting point. It is predetermined whether the direction of reading the numbers is left, right, up or down and which two digits of the number in the random number table determine each person's number (for example, the middle two digits). After selecting 20 people for the first group, 20 people for the second group, and 20 people for the third group, the next step is assigning the groups. First, the names of the groups are written on 3 separate papers and they are folded 4 times so that there is no view of the writings. The papers are put in a container and place them randomly in separate folders with three different colors, green, yellow and red. At this stage, the researcher does not know what group is inside each folder. Green, yellow and red colors are written on the other three papers and they are folded 4 times. they are put into a container and the papers are randomly selected and the groups are determined. For example, if the first lottery was green and in the green folder was schema therapy with exposure and response prevention, the people who were selected in the first group with random number table will be placed in the schema therapy with exposure and response prevention group.