Magento get attribute value of a multiselect

I am using this to get the value of an attribute that is a multi select box in magento.

if($_product->getAttributeText('attribute') == "Value 1") {
    // Do something
}

It works however, only if it is the only option that is selected for the product. If the product has multiple options selected then nothing happens.

How can I get it to recognise the value even if it has multiple options?