Model (person) and dominated the London fashion scene and were well paid, unlike their predecessors. Twiggy became The Face of '66 at the age of 16. At this time, model agencies were not as restrictive about the models they represented, although it was uncommon for them to sign shorter models. Twiggy, who stood at with a 32" bust and had a boy's haircut, is credited with changing model ideals. At that time, she earned £80 an hour, while the average wage was £15 a week. In 1967, seven of the top model agents in London formed the Association of London Model Agents.
Face validity Generally, face validity means that the test "looks like" it will work, as opposed to "has been shown to work". In simulation, the first goal of the system designer is to construct a system which can support a task to be accomplished, and to record the learner's task performance for any particular trial. The task(s)—and therefore, the task performance—on the simulator should be representative of the real world that they model. Face validity is a subjective measure of the extent to which this selection appears reasonable "on the face of it"—that is, subjectively to an expert after only a superficial