How many psychologists does it take to change a light bulb?
None. The light bulb will change itself when it's ready.

How many psychologists does it take to change a light bulb?
Just one, but the light bulb really has to want to change.

How many psychologists does it take to change a light bulb?
Just one, but it takes nine visits.

How many psychiatrists does it take to change a light bulb?
"How long have you been having this phantasy?"
"Why does the light bulb necessarily have to change?"
"One, but he must consult the DSM-IV."

How many psychologists does it take to change a light bulb?
One, but he must consult the DSM-IV.

How many psychoanalysts does it take to change a light bulb?
"How many do you think it takes?"

How many Freudians does it take to change a lightbulb?
Two. One to change the bulb and one to hold the penis...er... I mean ladder!