To counter Psychic-type Pokémon effectively, you can use Bug, Ghost, and Dark-type moves. These types are super effective against Psychic Pokémon. Additionally, Steel and Dark-type Pokémon resist Psychic attacks. Some specific Pokémon that are good against Psychic types include Sableye (dark/ghost), Scizor (bug/steel), Bisharp (dark/steel), Tyranitar (dark/rock), and Aegislash (ghost/steel) . Its important to have Pokémon with moves of these types or Pokémon of those types to effectively counter Psychic-type Pokémon. Additionally, Mega Gengar, Giratina, and other Dark-type Pokémon are effective counters to Psychic-type Pokémon. Remember that Psychic-type Pokémon are weak against Bug, Dark, and Ghost-type moves, and having Pokémon with these moves or types will give you an advantage in battles against Psychic-type Pokémon.

In summary, to beat Psychic-type Pokémon, its best to use Pokémon with Bug, Ghost, and Dark-type moves, or Pokémon of those types to counter their abilities effectively.