Hank has been overweight since childhood. He diets frequently and can lose weight but always seems to gain it back, because he is unable to control his eating. Hank may have a problem with his:

At what age can parents expect children to become more secretive and distant?

a) during college b) when a child gets married c) early adolescence d) mid- to later adolescence

The methodology for demonstrating that kittens raised in a purely vertically

striped environment had lasting physiological effects involved (a) imprinting (b) recording the electrical events in single cells in the visual cortex (c) seeing if the kittens would adapt faster to horizontal than vertical stripes (d) ethological investigations