Theodore Roosevelt was the youngest president.
Answer:
random assignment
Explanation:
Random assignment is an experimental technique that seeks to form random and fully randomized experimental groups in relation to the treatments presented in the research. This type of technique prevents the formation of "combined groups" that show the differences to each other and can generate a comprehensive result on the research, thus the random formation of diverse groups that can represent a much larger and different population.
An example of this can be seen in the question above, where the researcher decides the formation of the group that will receive the medicine and the group that will receive the placebo, completely randomly.
Psychoanalytic theory is the theory of personality organization and the dynamics of personality development that guides psychoanalysis, a clinical method for treating psychopathology. First laid out by Sigmund Freud in the late 19th century, psychoanalytic theory has undergone many refinements since his work.
Answer:
expectancy theory
Explanation:
Expectancy theory assumes an person may respond or behave only in certain manner since they are driven to choose a particular behavior over someone because of something they anticipate to be the outcome of such a chosen behavior.
The theory of expectation is really about psychological processes of default, or of option. It describes the mechanisms an person must experience for making choices. Expectancy principle is a motivational theory first introduced from Victor Vroom during the analysis of organisational behaviour.
