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(from a Wikipedia article)
Question 1: When, and where on the cladograph do the skills being explored first appear (among vertebrates)?
Question 2: Are dependencies among the skills, and in what order do the skills appear?
Question 3: How do the skills change over the evolutionary sequence?
Short answer 1: This research does not address that kind of question, since it focusses on information-processing mechanisms rather than on observations. However, the simple innate skills being investigated here are likely to have emerged very early, since they are involved in basic survival, and the basic skeletal components and mechanisms of vertebrates appear to be fairly similar.
Short answer 2: Both the inheritance model and the 'inner language' model suggest that there is chunking and assembly of skill components, and that 'higher level' skills may utilize and thus be dependent on more basic skills and skill components. Some form of the more basic skill would have to appear first.
Short answer 3: Skills are assumed to evolve. Likely mechanisms are part of this investigation.