Ivan Pavlov purposefully set out to study learning in dogs when he discovered what is now called classical conditioning

College students faced with unsolvable problems eventually give up and make only half hearted attempts to solve new problems, even when the new problems can be solved easily. This behavior is probably due to ______

a. learned helplessness c. latent learning b. contingency blocking d. response generalization

Which of the following statements is true about donor insemination and in vitro fertilization?

A) In vitro infants are less securely attached to their parents than naturally conceived infants. B) Sperm donors are always screened for genetic or sexually transmitted diseases. C) In vitro babies are at no greater risk for birth defects than naturally conceived infants. D) There is a higher rate of low birth weight among in vitro babies than naturally conceived infants.