According to mary ainsworth's experiment, a child who plays independently, ignoring his mother, whether she remains in the room or leaves him with a stranger, is demonstrating attachment.
a. ambivalent
b. secure
c. resistant
d. avoidance

Ittle jake is strongly bonded to his mother. in fact, he has a difficult time letting her out of his sight. when his mother must leave him in daycare to go to work, the daycare provider calls because jake is inconsolable. since being placed in daycare, jake has also refused to sleep alone. what disorder do jake's symptoms suggest?