According to Mary Ainsworth's "strange situation" research, when were children most willing to explore? A When the stranger returned to the room after brief separation
B When the mother returned to the room after brief separation
C When their mother was present
D When their mother was out of the room
During which stage of prenatal development do body systems and organs begin to function?

A Fetal
B Germinal
C Conception
D Embryonic
Use the list below to answer the question:

Abnormal Behavior Criteria:
Deviant
?
Dysfunctional

To be diagnosed with a disorder, an individual must exhibit behavior that meets three criteria. What term completes the list?
A Diagnosed
B Disturbing
C Disabled
D Distressing
Individuals develop systematic reasoning during which of Jean Piaget's stages of cognitive development?

A Concrete operational
B Formal operational
C Preoperational
D Sensorimotor