Question

Cognition is studied indirectly t/f

Answer 1

That would be true. Since the inference of behavior. Hope you got it. 

Answer 2

The right answer is true.

The purpose of cognitive science is to describe, explain and where appropriate simulate or amplify the main dispositions and capacities of the human mind - language, reasoning, perception, motor coordination, planning, decision, emotion, consciousness, culture ... In a sense, cognitive science is nothing but scientific psychology.

Until today there are no tools to study this science directly, we must always have to do indirect experiments.