Until _____, the American Psychiatric Association classified homosexuality as a mental health disorder

What rationale do researchers offer for the use of animals in research?

a) Animals do not feel pain. b) Animals are cheaper than using human participants. c) Some research cannot be done with human participants. d) Most of the animals used in research are not commonly found as pets.

Jean Piaget used the ____ to illustrate and measure children's and adolescent's entrance into hypothetical-deductive reasoning

a. pendulum problem b. low of conservation task c. visual cliff d. three mountains task