I always knew I couldn’t see mental images but thought it was normal until just over a year ago.
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This is very interesting. You have it?
Yes, I have it. I also have some difficulty recognising faces. http://www.bbk.ac.uk/psychology/psychologyexperiments/experiments/facememorytest/startup.php
The latter surprised me as I always thought I was relatively good with faces.
An interesting radio discussion about it. http://www.cbc.ca/radio/popup/audio/listen.html?autoPlay=true&clipIds=&mediaIds=2690925523&contentarea=radio&subsection1=radio1&subsection2=currentaffairs&subsection3=quirks_quarks&contenttype=audio&title=2016/06/25/1.3645555-quirks-&-quarks-for-jun.-25-2016&contentid=1.3645555
Towards the end it mentions possible links with prosopagnosia and autism.