Step 1: Match each perspective carefully.
- P. Psychodynamic → (iii) Controlled by inner forces and conflicts (Sigmund Freud’s idea).
- Q. Behavioural → (i) Reactors to the environment (based on stimulus-response theories by Skinner and Watson).
- R. Humanistic → (iv) Free agent seeking self-realization (Maslow’s self-actualization theory).
- S. Cognitive → (ii) As thinkers (focus on internal processes like thinking, memory).
Thus, the correct match is:
\[
\boxed{{P-iii; Q-i; R-iv; S-ii}}
\]