His research shows little change in the pattern of night working, but an increase in evenings and a greater rise at weekends.

ECONOMIST: No more nine-to-five

The research began to establish a clear pattern of stress-induced craving for drugs -- both for those early in recovery and those who were actively using.

CNN: Stress may be causing your cravings

If anyone has research explaining whether there is a true pattern of more sicknesses on Sundays and a medical reason for it, I would certainly welcome the information.

CNN: Why do kids always get fevers on Sunday nights?

Other California KIPP schools showed the same pattern in my research, confirmed and amplified by a study of the Bay Area KIPP schools by the research organization SRI International.

FORBES: The Continuing Success of KIPP Schools

Researchers at George Mason University have detected a pattern of abnormally high short-selling in the three days immediately before a research downgrade is made public--four times the normal level of trading--and the trading isn't linked to earnings or other news.

FORBES: Tipping The Shorts

The form of leadership that holds most potential is a twist on the pattern described by Eric Von Hippel in his research on User-driven Innovation.

FORBES: Eight Steps For Addressing the IT Management Crisis

"We see a definite pattern related to the daily thermal tides of the atmosphere, " said RAD Principal Investigator Don Hassler of the Southwest Research Institute's Boulder, Colo.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans

The pattern is among the revelations in a map of religious migration across the globe, released on Thursday by the Pew Research Center, which also shows that Europe has more Christian immigrants than Muslim immigrants.

WSJ: U.S. Top Destination for Christian, Buddhist Immigrants, Study Says

"For whatever reason, there's a predictable pattern where September has bad performance, " says Steven DeSanctis a strategist with Bank of America Merrill Lynch's equity research team.

WSJ: Is the 'September Swoon' for Real?