________ is the process by which a response becomes more likely to occur or less so, depending on its consequences

In the 1800's what were most women feeding their babies and what reason was given?

a. breast milk because everyone was doing natural parenting at the time. b. goat's milk because it had less lactose in it. c. cow's milk because it was high in fat and this was good for the developing brain. d. condensed and evaporated milk, because it was convenient and "safer."

According to research cited in the text, which of the following is the primary reason that middle-aged men and women give for staying married to each other?

a. "my spouse is my best friend" b. "for the sake of the children" c. "for financial reasons" d. "for sexual reasons"