The assumption that desirable behaviors that are rewarded immediately and systematically will increase, and that undesirable behaviors that are not rewarded or are punished will diminish or be extinguished, is known as:

BEHAVIOUR THERAPY

Explanation:

Behavior therapy or behavioral psychotherapy is a broad term referring to clinical psychotherapy that uses techniques derived from behaviorism. Those who practice behavior therapy tend to look at specific, learned behaviors and how the environment influences those behaviors.

Behavior therapy does not involve one specific method but it has a wide range of techniques that can be used to treat a person's psychological problems

In behavioral therapy, the goal is to reinforce desirable behaviors and eliminate unwanted or maladaptive ones while the behavior itself is the problem and the goal is to teach clients new behaviors to minimize or eliminate the issue.

answer; i believe that the correct answer is ( rivers);

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.