To illustrate operational definitions of psychological concepts, we contrast them with their dictionary definitions. Table 4.1 lists six psychological variables, their dictionary definitions and one or more operational definitions.
Of course there will be wide variations, butâ¦. According to my (very general) estimations listed above, on average each person may consume 66 gallons of water each day. Generally, in the United States there are about 2.5 people per household. So the water consumption figure jumps to 165 gallons per day.
According to the US Government's Energy Information Administration, the United States consumes about 400 million gallons (1.51 billion litres) of gasoline every day. That figure equates to about 20 million barrels of oil every day. 2.