RT Journal Article SR Electronic T1 Market Psychology and the Psi Theory JF The Journal of Portfolio Management FD Institutional Investor Journals SP 35 OP 40 DO 10.3905/jpm.1978.408653 VO 4 IS 4 A1 J.T. Ross Jackson YR 1978 UL https://pm-research.com/content/4/4/35.abstract AB