I've discussed it before and I understand that it is difficult to imagine for those who do not have the problem I do.
60 minutes ran a story on the subject on Sunday. I missed it because the NCAA playoffs must have run overtime so my DVR did not record the full 60 minutes show.
Happily the clips of the show are online. And I link to them below. Since I'm asking you to watch them to understand my issue, let me first differentiate me from the extreme examples in the clips.
1. If I have met someone only once and spent a relatively small amount of time with them, I will recognize them again later, if at all, by their hair, their body shape, their size, facial hair, companion, context or if they put it together for me. If someone has no features my brain finds to be remarkable (not a value judgment!) then I won't recognize them. I have actually been told, upon introducing myself to someone, "Yes, we've met like five times." My strategy has been to go ahead and introduce myself to people, and let them tell me we've met...then "remember". As Oliver Sacks says in the video...it is also helpful to smile and be kind to everybody.
2. Occasionally under the conditions above I will meet someone and be able to recognize them later. If I am truly recognizing the face it is because the face has something that stands out about it. WC Fields' nose, for instance...although to be fair it is much, much easier for me to recognize wearing a hat than in the other photo that for some reason I feel looks like Orson Welles.

After repeated exposure - especially meaningful interaction - or just over a lot of time I begin to have a memory of the face (unlike the four people featured in 60 minutes). Thus I can recognize Tom Cruise. My deficiency is only a fraction of those featured in the story. Once I "have" the face it tends to stay with me.
3. Context is ridiculously important. Meeting someone at church then seeing them with no cues at the grocery store I will probably fail to be aware I've ever seen them before.
4. I previously blamed myself for "not caring" about other people, else I would recognize them, right?
5. If you do watch both videos and you want to know the part on the video closest to what my confusion is, in the second video they describe a strategy of hair color and face shape - showing a picture of a brunette aside one of a blonde. Then the replace the blonde's picture with another brunette. With the two brunettes side by side, my brain yells "impossible". This is why I have problems watching movies if it contains what I consider to be similar looking people (you probably wouldn't think so, but I do) whose faces are new to me. I cannot keep up which character is which.
OK - Here is part one. Here is part two. I'm happy to answer questions if you have any. Oh - I took the test and did well...because I have been habituated to most of those faces. But - today I read a story about the wife of the Syrian Dictator. I saw a photo of her. I wouldn't recognize her if we shared an elevator today.



