When they are practicing walking, babies average between ______ walking steps per hour

A ________ reinforcer is any reward that satisfies a basic biological need, such a hunger, thirst, or touch

a. primary b. negative c. positive d. secondary e. discriminatory

Secondary reinforcers differ from primary reinforcers in that secondary reinforcers

a. can potentially reinforce or punish behavior. b. do not satisfy physical needs whatsoever. c. do not inherently satisfy physical needs. d. only pertain to intangible objects or events, such as praise. e. are harder to achieve.