Another possibility is that only a portion of one molecule is transferred to the other molecule. This type of reaction occurs, for example, in redox and acid-base reactions. In redox reactions, the transferred particle is an electron, whereas in acid-base reactions it is a proton.
Psychology is the study of mind and behavior. It is an academic discipline and an applied science which seeks to understand individuals and groups by establishing general principles and researching specific cases.
Definition of psychology. Psychology is the scientific study of human and animal behavior with the object of understanding why living beings behave as they do. As almost any science, its discoveries have practical applications. As it is a rather new science, applications are sometimes confused with the science itself.