While such an approach has its merits, it still suffers from the attempt to turn essentially a loosely defined demographic variable (family) into a causal factor.
The perception of family history - and those involved - typically fall into a narrowly defined demographic box.
This method is independent of a priori defined demographic models and tree reconstructions, and is thus suitable for taxa with complicated population history.
These approaches typically likelihood based are work under a set of strictly defined demographic scenarios and currently can at best accommodate a few populations but see also Boyko et al. (2008) for a complex demographic scenarios in human populations.
Stories have been circulating all week that No 10 was pressing the chancellor next door for a handout to the Jams, the brand new acronym for a familiar but freshly defined demographic.
This led to a trend in the industry known as "splintering," in which one programming format (such as rock music) "splinters" into at least two more narrowly focused kinds of music (such as hip-hop or classic rock), in an effort to appeal to specific audiences with carefully defined demographic and psychographic profiles.
Broadly defined demographic genres, such as "women" or "men 18-to-34," are already battling it out on the CPM front and are highly commoditized categories.
This association may be seen in both broad demographic groups, such as the American Cancer Society study group (900,000 U.S. adults)[ 1] and in more narrowly defined demographic groups, such as the Nurses Health Studyy (NHS) group (122,000 U.S. female registered nurses) [ 2].
The second challenge you must address – and come to terms with – is that while you can target numerous tightly defined demographics, in this newer model, there's an inherent loss of control that can be difficult to adjust to.
"Advertisers are really looking to cable to deliver more defined demographics".
"Country radio is purely about mass appeal music, and it has some very defined limits because there are some very defined demographics that the owners are tying to find through that music.
