This is an addendum to my post.

I failed to mention that I think that, although a person with a circadian period of less than 24 hours might have more trouble recovering from travel in either direction, depending upon how far in each direction we are talking about (such people are weird in other was as well), the short-period person, should, in principle, have more trouble recovering from westward travel than from eastward. This is the opposite of your guess, as published on page 30.

Again, somebody explain why I am wrong, if I am.

Thanks,

Don Roberts

Jet Lag (continued)

Jeg lag for different circadium patterns

On page 30 you list two scenarios for which you predict whether it should easier for people to accommodate to flying east or west, depending on the length of their personal biological clock. I happen to be more of a "night owl" than anyone else I have ever known in my 73 yrs. of age. I would probably function "normally" if the earth's period of rotation were 30 hours.

On your quiz on page 30:

1. I am most awake in the evening.

2. it is harder for me to adjust to eastward travel.

My thinking may be messed up, but I think that most if not all people with circadian periods more than 24 hours would answer as I have.

In summary: I think your answer for the night owls should be: 1) b, 2)b instead of 1)b, 2)a.

If I'm wrong, somebody please explain why.

Thanks,

Donald B. Roberts