Introspection was really important for the development of experimental psychology. It helped scientists study how people think and feel in a structured way.

Key People:

• Wilhelm Wundt (1832-1920) is often called the "father of experimental psychology." He opened the first psychology lab in 1879 at the University of Leipzig.

How It Worked:

• Introspection meant that trained people looked closely at their own thoughts and feelings in a controlled environment.

Importance of Data:

• This method helped gather measurable data. Wundt wanted to study this information, which made psychology more scientific.

Historical Background:

• By the year 1900, about 25 labs around the world were using introspection. This shows how much it influenced early research in psychology.