From the Baltimore Sun’s Bill Ordine and Roch Kubatko :

Orioles first baseman Rafael Palmeiro can wear earplugs, stuff wads of cotton in his ears, even put on headphones and listen to Green Day full blast – and it won’t necessarily block the distractions that might be responsible for his feeble hitting since returning from a 10-day suspension three weeks ago after testing positive for steroids, according to some sports psychologists.

Palmeiro wore earplugs Tuesday night in Toronto to muffle the jeers from Blue Jays fans; he went 0-for-4, and is 2-for-26 with one RBI after the suspension.

“It might be that he has some inner chatter going on, and it’s not just the external distraction from the booing that’s affecting him,” said Patrick J. Cohn, an Orlando, Fla., sports psychologist.

“We often think that professional players can go into their own bubble, their own cocoon, and continue to perform well even with the distractions. In some cases, the internal chatter might include the player putting greater expectations on himself to perform. Then when they think their performance doesn’t match their own expectations, they can crumble.”