Dear Sehraj, yes you can pursue Psychology after BPT. The basic eligibility criteria for Masters in Psychology is that you should have studied Psychology as a subject in your Bachelor's degree and secure a minimum aggregate of 50% in your Graduation. M.Sc Psychology deals with the scientific aspect of Psychology while MA Psychology deals with the social aspect of Psychology. Post Masters, you can pursue Ph.D or you can work as a Lecturer in Psychology in BPT Colleges or you can appear for UGC-NET for the post of Assistant Professors. You cannot be a counsellor though because you atleast need a M.Phil to be a Counsellor and be registered with the Rehabilitation Council of India. You have multiple opportunities in this field.