In the United States, the leading cause of childhood death is ______

Wanda is assessing a new treatment for performance anxiety that involves teaching individuals how to control their breathing. She presents her preliminary results at a student research symposium and is questioned as to whether her intervention affects the cognitive components of performance anxiety. She is being questioned about the possibility of ____

a. mono-method bias b. mono-operation bias c. treatment interactions d. hypothesis guessing

Nancy and Cliff had four children who did not have cystic fibrosis, but their fifth child was born with the disease. Cystic fibrosis is carried on a recessive gene. Given what you've learned in this chapter, how could this happen? a. It wasn't until the fifth child that both parents passed on the allele for this illness

b. Recessive genes normally skip a generation, but after the parents had five children, the gene was expressed. c. Their fifth child must have been a boy, which makes it more probable that he would have the illness. d. Their fifth child must have been a girl, which makes it more probable that she would have the illness.