June has been avoiding riding elevators since she was seven years old. When she is with other people, she makes excuses to use the stairs and feels relief upon avoiding elevator rides. June's fear of elevators is being maintained by reinforcement.

Which term refers to a group or community that forms the focal point of a study and consists of all the people considered for evaluation in the research? a. sample b. population c. variable d. mean

Which of the following guidelines should be followed if you have a large spill that is dangerous or beyond your ability to clean up? a) call emergency authorities b) try to keep it quiet so nobody panics c) if the material is flammable, get several buckets of water to dilute it with d) wipe up as much as you can with appropriate rags

Why do governments supply public goods and services instead of selling them to those people who use them