One researcher, Males (2009, 2010), has suggested that the brain development hypothesis that is often used to explain the transition to adulthood in young adults is wrong. Instead, Males argues that ____ is a stronger predictor of risky behavior than neurological changes.
a. sexual activity or inactivity
b. endocrine functioning
c. poverty
d. sex
Question 2
Which of the following is the most accurate statement about gray hair?
a. In many cases, the pigments that cause gray hair are actually toxic to the human body, which is why dying gray hair can actually
b. Gray hair is something that all people will inevitably experience, starting at an average of 25 years of age.
c. Hair doesn't turn gray, but rather stays gray when the natural pigments in hair follicles stop being produced.
d. Most people view the graying of hair as a very negative event that signals the end of youth, vitality, and productivity.
Relationship of the 12 cranial nerves to specific regions of the brain.
In one-male group species, extra males typically reside in all-male “bachelor” groups. These are Han
Preoptic Area of the Rat Brain
Deep Brain Stimulation
A rat pressing a lever to obtain rewarding brain stimulation.
A pedigree for an X-linked dominant trait. Affected males produce all affected daughters and no affe