Harry is in college and is asked to imagine what the world would be like if humans had never invented the wheel. According to Piaget, if Harry is able to think abstractly about this problem, Harry is in the ____ stage of cognitive development.
a. sensorimotor
b. concrete operational
c. preoperational
d. formal operational
Question 2
Recent studies indicate that many people have never developed beyond the stage of concrete operational thought. Which statement lends support to this hypothesis?
a. Many college students feel unprepared to select a career.
b. Many day-to-day tasks require only concrete operational skill levels.
c. Many adults are unable to solve problems requiring abstract reasoning skills.
d. There is a wide variation regarding when people can solve conservation problems.
Prenatal development in humans.
Cyanobacteria of the (a) genus Synechococcus form (b) mats that line hot springs around the world.
In the Tai Forest a female chimp demonstrates a skill once thought to be unique to humans. Here she
Systems of humans
How Much Food Does the World Produce Per Person?
Arctic tundra on the world map