Ghost type moves not effective on psychic Pokémon?

I’m playing through White 2 and realized that whenever I use a ghost type move on a psychic type, it’s not super effective. When I realized this, the Pokémon I was battling was a pure psychic type. This happens in both trainer and wild battles. Could this be a glitch?

Pleaselog inorregisterto add a comment.

Did you use Night Shade?Night Shadedoesn’t take weakness or resistance into account(but still does not effect types it is immune to), as it does damage equal to the user’s Level.

If you didn’t, what move did you use against what Pokémon?

The Psychic type Pokémon you could’ve battled are Munna, Musharma, Woobat, Swoobat, Espeon, Sigilyph, Gothita, Gothorita, Gothitelle, Solosis, Duosion, Reuniclus, Baltoy, Claydol, Elgyem, Beheeyem, Spoink, Grumpig, Lunatone, Solrock, Starmie, Bronzor, Bronzong, Beldum, Metang, and Metagross.

Only 5 on the Pokémon you could’ve encountered wild/in a trainer’s party take Neutral Ghost damage: Bronzor, Bronzong, Beldum, Metang, and Metagross.If you fought them and used a Ghost type move, your attacks would’ve hit neutrally.

Source(for all the Psychic Types)

Hope I helped!