Final answer:
An EO or Establishing Operation, in psychology, refers to a construct that influences the effectiveness of a reinforcer, while UMO stands for Unconditioned Motivating Operation, affecting primary reinforcers.
Step-by-step explanation:
The term 'EO' refers to an Establishing Operation, which is a concept used in behavior analysis within the field of psychology. It alters the effectiveness of a stimulus as a reinforcer. The term 'UMO' stands for Unconditioned Motivating Operation, which refers to a motivating operation that is unlearned and affects the value of primary reinforcers. If an EO is too strong, it can have detrimental consequences or create an excessive level of motivation, making it necessary to weaken the EO. Practical applications of manipulating EOs can be seen in various settings, including therapy, education, and behavior modification programs.