Drive-reduction theorists would say that getting a haircut to look attractive is a(n) ________

Research on the dynamic-systems approach has shown that some traits can be entirely genetic or entirely environmental

Indicate whether this statement is true or false.

Martha cherished her family photographs and letters from her children and siblings. She began to save many more items that reminded her of family members. Soon, she displayed:

an abundance of scrap-booking materials. a fire hazard. improved memory for details. compulsive hoarding.