Students (participants). Most of the intermediate schools in Buraydah city in
Saudi Arabia have two sections at each level with approximately 25-30 students
in each class. Subjects in the study included four sections (classes) of the third grade of
the intermediate level from two governmental schools, for a total of 122 students. All
students participating in both schools are Saudis, mostly from the middle class, and share
similar characteristics in terms of socio-economic status.