The genetic factor that appears to play the most prominent role in obesity is metabolism. Metabolism is
defined as physiological processes, such as the conversion of nutrients into energy, that take place within
What environmental factors might be related to obesity? Many have been suggested but there is little
empirical evidence to support most of these. Eating habits, however, tend to be quite important. Some
individuals eat because it is what they have gotten accustomed to doing. Others, however, eat only when
they are hungry.
In one amazing study, obese subjects were brought into the laboratory and asked to do an extremely
involved task. Completion of the task required total concentration for an extended period of time. While
the subjects were engrossed in their work, the researchers altered the clock. Half of the subjects, upon
Cognitive Advancement during the Ages of 6 to 12 Years
Children during this age range are in what Piaget calls the concrete operational stage of cognitive
development. He refers to these advancing skills as concrete because he feels that the child is not able to
use abstract reasoning. In other words, the child’s thinking is still very cut and dry. During this stage of
cognitive development, however, the child will be acquiring and utilizing some amazingly complex
operations. These include such skills as multiplication, division, and problem-solving strategies. Piaget
stressed the importance of reversibility. This idea, that physical and mental operations can be reversed, is
clearly involved in many of the other operations the child is learning to utilize. Mathematical division or
subtraction, for example, would not be possible without an understanding of how to reverse operations.
At the same time that the child is learning to reverse her thinking, we notice an increase in her ability to
take another person’s perspective. It seems natural that these abilities would coincide. Being able to take
someone else’s perspective requires the skill of seeing issues from more than one angle or from more than