Depends on what kind of psychic ability you mean as there is so many.
Outer planets would rule psychic territory. Any soft aspects or conjunctions/oppositions to the luminaries (I would use tighter orbs) would show potential. Squares would cause tension in the ability.
Uranus [ Occult studies, divination, tarot, tea reading etc.. metaphysical, healing abilities, telepathy, insight, intuition, akashic records, higher-wisdom, astrology practices, moments of genius, fast processor information ]
Neptune [ Dreams/dreamwork, imagination, seeing auras, empathy, clairvoyance, shamanistic, mystical, astral realms, crystal divination, water divination, emotional sensitivity, ESP, spirit guides, angels etc... ]
Pluto [ Seeing through/x-ray vision (psychological), healing abilities, past life regression, communicating w/ beings/dead, channeling/mediumistic abilities, intuition. ]
also the Moon would play a role
Moon [ Intuition, dreams, subconcious mind, feelings/emotions, divine feminen, receptivity, psychic awareness, empathy, nurturance, our shadow self ]
Look at the aspects these planets make to personal/luminaries and in what houses they sit in to where you might find psychic abilities.
Sun sign in:
AQUARIUS: interest in metaphysics, eccentric subjects
PISCES: interest in the spiritual/mystical, empathetic, intuitive
CANCER: Extremely Intuitive
SCORPIO: Extremely intuitive
TAURUS: Intuitive
Moon sign in:
PISCES: (Empathetic, sensitive, mystical, imaginative, clairempathy, clairvoyance) primarily functions from astral body
CANCER: (psychic, sensitive, empathetic, watery, emotional,the past, clairempathy, clairvoyance) primarily functions from emotional body
SCORPIO: (penetrating, deep, focused, emotional, watery, magnetised, transformational, healing) primarily functions from emotional body
TAURUS: (grounding, intuitive, clairsentient, imaginative, motherearth vibe, fertile dreamstate) primarily functions from etheric body
AQUARIUS: (Highly processed information, insightful, claircognizance, clairaudient, intuitive, eccentric) primarily functions from mental body
Mercury sign in:
Cancer
Scorpio
Pisces
Aquarius
Sagittarius?
Emphasis on water signs or houses.
Also any planets in water houses: 4H, 8H, 12H
look there.
also 9H could indicate higher learning
I also seen around that sagittarius could be prophetic? idk.
edit; also mars and saturn should somehow play a role in whether or not these abilities are used appropriately rather than the individual not having anything grounding them. Mars shows energy put towards/passion/drives so maybe Mars unafflicted in a water house? and saturn (karma, form, structure, crystallization, foundation, practility, effort, self-control, discipline) unafflicted in a water house or 9H?
mars and-or saturn sextiles/trines to neptune, uranus or pluto.
Also now that I think about it,
Air signs (aquarius, gemini, libra) more so Aquarius (URANUS) + Gemini (MERCURY) are like messengers, they may unconsciously/subconciously be communicating divine messages to others. They may just "know" things. They may express things in ways that are understandable. very knowledgeable. ancient wisdom abilities. Air signs are more inclined to be claircognizance and clairaudient in rarer cases psychometry.
Earth signs (taurus, virgo, capricorn) sense things from the environment, their more in tune with their surroundings and grounded. They have more sense of being in their bodies (if not afflicted). They're more practical about applying spiritual concepts and may have affinity for nature, plants, animals... very intuitive. Earth signs may develope clairsentience.
Fire signs (aries, leo, sagittarius) would energise, warm, enlighten and inspire others. They would spark something divine in you. They illuminate things whether it's problems, issues, shadows or reflecting your own divine light. Fire signs may become clairvoyant. They are very creative and manifest things quickly. Some may have an ability of directing focus and intuitive impulses (aries). If afflicted ego conflicts. Magnetism in leo. Visionaries.