The phrase "attention expert" is correct and usable in written English.
It can be used to refer to someone who specializes in the study or management of attention, often in contexts related to psychology, marketing, or education.
Example: "As an attention expert, she provides valuable insights into how to capture and maintain audience focus during presentations."
Alternatives: "focus specialist" or "attention specialist".
While line-of-duty deaths grab the public's attention, experts say that law enforcement officers more often — perhaps two or three times more often — die by their own hands.
But as the donor appeal for Ethiopia, the third largest in the world, competes with disasters in Syria, Yemen and South Sudan, releasing timely and accurate information would better attract donors' attention, experts say.
As soon as the Genome Research paper was published and attracted media attention, experts on the human body -- with specific expertise in developmental fetal osteology and archaeology -- began a conversation on Twitter.
Though both firestorms generated great attention, experts say the wine country blazes were worse for many reasons.
Such controversies tend to overshadow issues that might otherwise gain broader attention, experts say, such as Friday's disappointing economic growth figures.
While the researchers concede that their current work is based on a small sampling of surgeons, their findings have garnered the attention of palliative care experts.
Pay no attention of expert advice unless you want untreated osteoporosis.
George W. Bush promised to pay attention to expert advisers in his campaign.
Unexpectedly, saliency appeared to be more relevant to visual attention among expert users than novices, and potential reasons for this are explored.
Combined process- and outcome-orientation, in turn, must pay attention to expert legitimization, and how knowledge can have a bearing on (and potentially change) established institutions and practices of decision-making.
