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.
Research is an important part of psychology and it is required that psychologists conduct research so as to understand and explain the different behavior mechanism. Research by psychologists is conducted so as to be able to study how humans feel, think, learn and even act.