Sierra constantly criticizes her appearance and her abilities and downplays her many accomplishments. These negative, self-defeating thoughts have led to her long-standing depression, according to the __________ theory

Which of the following statements is true regarding Charles Darwin?

a. He was the first to propose a theory of evolution. b. He searched for an explanation for living things because he had never accepted the creationist point of view. c. He formulated his theory during the voyage of the HMS Beagle. d. He waited several years before publishing his theory. e. He was the only one in his day to propose a theory of evolution.

Which research method involves watching

behaviors as they occur without intervening or altering the behaviors in any way? a) case study b) experiment c) correlational studies d) naturalistic observation