Who argued that if psychology was to be a true science, only what can be seen and measured should be studied? a) watson
b) freudc) jungd) erickson

A) Watson

Explanation:

John B. Watson was a psychologist of was a proponent of behaviorism. According to the behaviorism perspective the mental state of a person is the result of interacting with the environment and the past experiences.

He argued that consciousness could not be measured or studied rather that there are various interpretations of what it is.

Hence, Watson argued that psychology cannot be measured.