Wilhelm Wundt a German physician and philosopher in 19th century set up the first psychological laboratory at Leipzig University in 1879 to study human behaviour, through his rigorous experiment, work and efforts made psychology emerged as a science.
However, establishing psychology as a science was a challenge. People still didn’t knew how the mind work and functions. There was still a massive amount of data yet to be gathered. Thought it emerged as a science it was into many controversies and criticism; let see what were they.
1) PSYCHOLOGY IN PRE PARADIGMATIC STATE
According to American philosopher, Thomus Kuhn psychology has not succeeded in producing a cumulative body of knowledge that has a clear conceptual core. It contrasts with other sciences.
2) PROBLEM RELATED TO OBJECTIVITY AND VALIDITY
Methods such as introspection and psychoanalysis are inherently subjective, so in some extant psychology falls short on the criteria of objectivity and validity.
3) OBJECTIFYING HUMANS
Since many experiments on humans and their behaviour some of the scientist from the same field criticised the work. They said it treats human as an object, it sometimes portrayed as dehumanizing.
4) ISSUES RELATED TO PREDICTABILITY AND REPLICABILITY
In psychology making exact prediction is difficult and major goal of psychology is to predict human behaviour and humans respond in different way in different situations thus causing more difficult to understand human behaviour. Therefore causing the test results in psychology are more varied, harder to control and difficult to replicate.