How to reference controller action from hidden action? Correct path? I have seen a number of different paths, but, it is a bit confusing to me. What should be in my value in the HIDDEN input action below?

I have a twig page at my root:

&lt;form method="post" action="" accept-charset="UTF-8"&gt;
    &lt;input type="hidden" name="action" value="psychEmail/pubRequest"&gt;

    &lt;!-- ...--&gt;

    &lt;input class="btn submit" type="submit" value="{{ 'Submit'|t }}"&gt;
&lt;/form&gt;


and then I have a plugin PsychEmailPlugin.php class file with 
class PsychEmailPlugin extends BasePlugin

and then I have a controllers subdirectory with a PsychEmailController.php file that contains an action:

class PsychEmailController extends BaseController
{
    public function actionPubRequest($emailAddress)
    {
        $email = new EmailModel();
        $email-&gt;fromEmail = $emailAddress;
        $email-&gt;toEmail = 'myemail@gmail.com';
        $email-&gt;subject = 'Publication Request';
        $email-&gt;body    = 'Your requested publication is attached.';

        craft()-&gt;email-&gt;sendEmail($email);
    }
}
After my changes, this worked:

value="psychEmail/publication/pubRequest"