You have joined several websites to keep in touch with current friends, reconnect with old friends, and find and contact people with interests similar to your own through people that you already know. what kind of websites have you joined.

Social networking Web sites

Explanation:

Social networking web sites are online sites that provide a social platform to people for interaction, communication,exchanging messages, photos, videos, etc .Through these sites people stay in touch and establish contacts with new people .

It is also a platform where brands and advertisements can be promoted so that the users can get to know about it. It produces network of people through social media.Some social networking sites are LinkedIn,Tumblr etc.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

answer; analytical,creative and practical;