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Narberth, PA 19072-2307
United States

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Mr. Keith Karn, PhD


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1 to 5 of 34 total
Posted By Keith Karn 02-06-2026 11:37
Found In Egroup: Forensics Professional Technical Group
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Hi Ian, While I've been working in the field of human factors / ergonomics since 1980, I'm a relative newcomer to the applications to forensics work. I've got about 20 cases under my belt now (mostly analysis and report writing). I've only been deposed once and I'm scheduled for my first court appearance ...
Posted By Keith Karn 12-09-2025 16:36
Found In Egroup: Forensics Professional Technical Group
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Fellow Technical Group Members (cross-posting to multiple TGs - I'm sorry for those in multiple groups), I am writing to ask for your thoughts and / or suggested reading / references on the following. The scenario: An older person (80s) is wearing prescription lenses with photochromic lenses (sometimes ...
Posted By Keith Karn 12-08-2025 12:53
Found In Egroup: Perception and Performance Technical Group
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Fellow Perception and Performance Technical Group Members, I am writing to ask for your thoughts and / or suggested reading / references on the following. The scenario: An older person is wearing prescription lenses with photochromic lenses (sometimes referred to as "Transitions Lenses," though I'm ...
Posted By Keith Karn 11-07-2025 13:01
Found In Egroup: Product Design
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Thanks for your comments Brian. I'm sorry for my slow response--super busy with medical device clients who "are ready for human factors" (i.e., want a validation study). :-( I'm glad you approve of our definition of human factors / ergonomics on the HFES website. I take some credit for pulling that together ...
Posted By Keith Karn 11-04-2025 21:38
Found In Egroup: Product Design
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Hi All - Here are a few more thoughts on the TG names: As I mentioned in my prior post, I am a member of many of the HFES TGs including the "User Experience Technical Group (and formerly the Computer Systems and Internet technical groups). They are inexpensive, and represent a broad range of my interests. ...