The Henley Centre devised a chart to represent the degree to which each of a dozen categories of magazine satisfied the nine media needs already described:

Note that no magazines fulfil the 'Default' function. No-one reads a magazine because it is already 'on' - magazines are only read when someone makes a deliberate personal choice.

This chart underlines a vital point in a simple way: different kinds of magazine fulfil different needs and therefore work in different ways. The implication is that the readers who choose a given type of magazine find that they develop a relationship with it.