What you are before you are productive. This phase usually includes procrastination activities such as watching TV on the internet or typing in 'facebook.com' into your address bar when you are already on Facebook.
Oh man, I have to be preductive for at least 4 hours before I write my paper. Maybe I'll watch all of 30 Rock again.
Predictile dysfunction (PD) means that you cannot get and/or maintain a prediction. In some cases the prediction becomes partly firm, but not hard enough to actually perform. In severe cases of PD, there is no movement in the prediction at all.