Weakness as in types? Like psychic moves aren't effective on a certain type? Well, psychic has no effect on dark-types, not very effective on psychic-types (DUR), and not very effective on steel-types. Although, if you were wondering what psychic will LOSE against, (as in super effective types that damage psychics greatly), the the types would be dark-types, bug-types, and ghost-types. Hope I helped! :)
Psychic-types are weak against Bug, Dark, and Ghost-type moves.
psy wave, phsychic,psy beam, and confusion
The best phsychic pokemon!!
i think you can develop phsychic abilities.
the pokemon good against fighting are: flying ground fire (I think)
Kadabra and Alakazam both learn Psychic at level 40.
Dark Pokemon are Psychic Pokemon's weakness.
claydoll learn hyper beam. self destruct, earthquake, and sandstorm; it can also learn phsychic
The weakness of electric type Pokemon is ground type Pokemon.
Rock Pokemon's weakness is water types so in the game choose the water starter
its only weakness is dragon
The weakness of flying type Pokemon is Ice, Electric and Rock.