Inattentional blindness results when we fail to notice changes in objects to which we are not directly paying attention

Any stimulus that follows a behavior and increases the likelihood that the behavior will be repeated is called a ______

a. cue c. reinforcer b. situational artifact d. higher-order conditioner

One out of every ____ people in the United States is sixty-five years of age or older

a) four b) six c) eight d) ten