The view that human nature incorporates a set of internal pressures that compete and conflict with each other reflects the

A monthly paycheck best represents a ________ schedule of reinforcement

a. fixed interval b. variable interval c. fixed ratio d. variable ratio e. continuous

The chance that one member of a pair will develop a disease that the other member

of the pair is known to have is called a (a) correlation coefficient (b) concordance rate (c) group index (d) individual similarity index (e) any of these, depending on the disease