The fact that children choose play partners who are similar to them, and that this in turn leads to gender segregation, is in line with which theory?

_________________ is included as a required element among DSM-5 diagnostic criteria for bipolar II disorder but is not a REQUIRED element of DSM-5 diagnostic criteria for bipolar I disorder.

Fill in the blank(s) with the appropriate word(s).

A person who feels unacceptable urges maylash out against others who have those urges, thus

expressing the opposite feeling. This is called A) displacement B) sublimation C) reaction formation D) denial