Rate of responding is faster when a variable ratio schedule of reinforcement is used rather than a variable interval schedule of reinforcement with a comparable number of reinforcers earned per hour. The account proposes that the faster responding is selectively strengthened by the higher number of reinforcers earned per hour for this faster responding.

changes in factors like average income and preferences can cause an entire demand curve to shift right or left. this causes a higher or lower quantity to be demanded at a given price. demand curves relate the prices and quantities demanded assuming no other factors change. it is important for consumers to know this information, because it is crucial for them to know what they can afford and can't afford. i hope this .

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.

answer; social penetration theory;

answer; /// blank (1) fall; blank(2) rise;