The document discusses various physical and intellectual differences that exist among individuals. It notes that people differ in traits like reasoning ability, imagination, emotional expression and stability. Learning styles and skills also vary, as some learn more easily through different methods than others. Even among people of equal intelligence and education, differences exist in achievement and knowledge. Individuals also have varying specific tastes and interests. The document concludes by listing 8 factors that affect individual differences in a classroom setting, such as class size, teaching methods, guidance, and vocational choices.