The phrase "are considered a decisive" is correct and usable in written English.
It can be used when discussing factors or elements that are viewed as crucial or determining in a particular context.
Example: "In the debate over climate change, scientific evidence and public policy are considered a decisive factor in shaping future legislation."
Alternatives: "are seen as a critical" or "are viewed as a determining".
In other eras, as in modern times, concentration on the latter has been considered a decisive criterion, so that philosophers who are Jewish but unconcerned with Judaism or the Jewish heritage and destiny in their thought are not ordinarily classified as Jewish philosophers.
Indeed, one of the reasons for selecting this topic is that, in various studies that analyze and propose quality models, instructional design is considered a decisive factor in the educational experience of the students (Cabero, 2006a, 2006b; Correa & Paredes, 2009; Gil, 2004; Khlaisang, 2010).
Despite the above, the offensive was considered a decisive Syrian defeat by both sides.
In North Korea, Kim Il-sung was considered a "Great Leader" with a decisive role; he was cited by official media as the man who established the WPK and founder of the Juche idea.
To the GoSL, this transitional period was considered a crisis which necessitated decisive action.
SCORECARD -- The environmental advocacy group is spending $250,000 to run this commercial in four Midwestern and border states: Missouri, Wisconsin, Michigan and, next week, Ohio, all of which are considered potentially decisive in the fall campaign.
Besides the aesthetic properties, mechanical and physical properties of fabric are considered as decisive quality parameters.
Those counties, which went strongly for John McCain in 2008, are considered decisive swing counties, Ms. Parry said.
Bayes Factors above 10 are considered "decisive".
Afterwards, medical specialists whose judgments are considered decisive review the potential cases.
