Weightlessness and space flight tend to cause severe motion sickness because these situations affect the __________ system

Mr. Smith (age 72) is brought to the hospital emergency room. Mr. Smith's son explains that his father woke up this morning and was "not himself.". Mr. Smith appears confused, agitated, and a bit frightened. He does not know his own name and cannot recognize his son. Mr. Smith's son reports that his father had been completely fine with no symptoms prior to that morning. Mr. Smith appears to be

suffering from a. dementia. b. Alzheimer's. c. delirium. d. amnestic disorder.

According to Erik Erikson, adolescents are in the __________ stage of striving to become aware of the uniqueness of self

a) industry-versus-inferiority b) identity-versus-identity confusion c) intimacy-versus-isolation d) generativity-versus-stagnation