Answer:
Empiricism:
This school of thought theories that all sources of knowledge are gotten from the senses, such as what we hear see, feel, or touch.
In summary, it believes that knowledge can only be gotten from experience. Empiricism was theorised by John Locke.
Structuralism:
Structuralism in psychology was theorized by Wilhelm Wundt and Edward Titchener.
This school of thought believes that the mind can be explained or analysed by defining and explaining human experiences.
Functionalism:
This aspect of psychology is attributed to Charles Darwin and it focuses on how human behaviour have changed over the years and what caused the changes.
Early experimental psychology:
This aspect of psychology was founded by Wilhelm Wundt early in the 1900s and it is based on scientific methods and experiments to try and explain the human mind.