What do eating disorders and sleep disorders have in common?
a) The disorders are not well understood, and the contributions of both psychosocial and biological factors are not well defined.
b) Both disorders have had psychiatric classifications for many years.
c) The disorders are rarely, if ever, fatal.
d) The disorders originate from a social perspective.
Question 2
Social selectivity refers to
a) cultivating only one's most important social relationships.
b) restricting one's social interactions only to family members.
c) seeking out new social interactions.
d) seeking out solitary social activities.
All living organisms descended from a common ancestral cell
16.23 Slow-Wave Sleep Deprivation
Play in Four Cultures Across cultures, play is the most common activity in early childhood. Source:
The two most common deformities of the spinal column are scoliosis and kyphosis.
REM Sleep