Psychology is a field in science that studies the mind. It is often identified as one of the newest fields in science but dates back much further.
Aristotle, (384BC – 322BC) a Greek philosopher, discovered the five senses – sight, hearing, touch, taste and smell. With these senses one feels pleasure or pain. He also stated that of all the living beings, only humans have the ability to think, and theorised the connection between mind and body, and mind and reason.
Hippocrates and Galen, both Greek physicians, pointed out that humans can be recognised by their behaviour.
The field developed little through passing centuries, and Johann Weyer (1515 – 88) laid out facts that the mental illnesses which were attributed to witchcraft came from natural causes. During the 18th century, philosophers gained new knowlege through anatomy of the brain and the nervous system. Immanuel Kant, a German philosopher, classified the mind into knowing, feeling and willing, which are parts of thinking process.
In the 19th century many psychological laboratories were built across Europe, which helps to analyse a person’s behaviour and their mental well-being. The old idea that mental disturbance was the result of the person’s environmental forces acting on the mind was disproved.