I am a bit exasperated folks after another little spat with my mother, and I was wondering if a particular compulsion of hers is listed in the DSM-IV (or is it V now?) as a symptom of some recognized disorder. I’ve also seen this bizarre behavior in her mother, and it worries me that maybe I’m carrying some gene for it. My mother is mentally ill in some way; she’s been hospitalized several times.
Part of the reason I’m posting this here now is that I feel I was just witness to a particularly concise example of it, which makes relating it easier: I was at my mother’s house, and she was sick and asked me to make her a “green drink” she likes, made out of vegetables in a fancy high-powered blender. After getting the list of ingredients from her, I asked how to run the blender. The exchange that followed went something like this:
Me: How long do I blend the drink?
Her: 30 seconds.
Me: Do I run the blender on high or Low?
Her: You need to use a timer to time the blender.
Me: But do I run the blender on high or low?
Her: I already told you, you run the blender for 30 seconds.
Me: But do I use the high speed setting or the low speed setting?
Her: It doesn’t matter.
Me: Well, which setting do you use when you make the drink?
Her: I don’t know. It’s different every time.
(It may clarify to point out that this blender is the most used appliance in her kitchen. She is very familiar with it.)
Essentially, what happens is that someone will be having a rational conversation with her (or her mother) when she’ll abruptly decide to withhold some specific and useful but otherwise apparently insignificant piece of information, either by changing the subject, insisting that she already told you and refusing to repeat herself, claiming that the information doesn’t exist, or just flatly refusing to say. This will sometimes be done as bizarrely as spontaneously giving someone a specific piece of advice (“Don’t buy gas from that gas station.”) followed by a refusal to give any explanation for the advice when the obvious question is asked. (“Why not?” “You don’t need to know that.”)
The only clear pattern I’ve noticed is that it’s much more common when they are under stress- last week I picked my mom up when she called me from a pay phone saying she had a flat tire; when I got there the car was nowhere in sight, and for the first five minutes she refused to tell me where it was, only insisting I drive her to the nearest public restroom. The car turned out to be parked in front of a closed Firestone Service Center down the street, and I can’t think of any rational reason for her to have not wanted me to know it was there.