One test involved asking his subjects questions about the pictures; if they provided an answer, he asked them to rate their confidence on a 3-point scale defined verbally as "slightly sure, fairly certain, or absolutely certain".
It usually burns low, but increases slightly in certain situations.
James Marsden, on the other hand, is slightly less certain a prospect.
Businesses in Boston, Chicago, Kansas City and San Francisco said wages were moving up slightly "for certain skilled labor positions in industries facing worker shortages".
Arsène Wenger's future seems slightly less certain right now and arguably he had greater reason to be disappointed with a draw which leaves Manchester United with genuine hopes of capturing a top-four place at Arsenal's expense.
The genetic code, once thought to be identical in all forms of life, has been found to diverge slightly in certain organisms and in the mitochondria of some eukaryotes.
The new coach is slightly less certain about one or two finer Six Nations details, appearing to be under the impression England are playing Italy in London next month rather than Rome and having to be corrected after saying Scotland had "never won the Calcutta Cup" in recent times (they have won it three times this century, most recently in 2008).
Therefore, the FoS values increased slightly after certain time periods.
Our results provide proof of principle that pharmacologically blocking the TNF-α inflammatory cascade can slightly reduce certain markers of NPC disease.
The placement of A/Iraq/207/NAMRU3/06 is slightly less certain; it also groups with EMA-1 but with lower bootstrap support.
