Six-month-old Juan's mother has not been able to get him on a regular sleeping and eating schedule. New York Longitudinal Study researchers would say that Juan is

Another name for nearsightedness is presbyopia

Indicate whether this statement is true or false.

Dave's curfew was removed after he earned straight A's this semester. The removal of the curfew is a

a) punisher. b) negative reinforcer. c) positive reinforcer. d) conditioned response.