Indeed, we assume that the phonetic processes of the type described are generally not accessible to overt manipulation.
I was all of seventeen at the time, but there was no overt pressure from my parents.
This construction gives rise to an environment in which the supposedly resumptive strategy is possible even in the absence of the requisite overt morphological agreement.
Subject realization in syntactic development same information as is otherwise conveyed by overt subjects.
It is precisely this modifiability that allows individuals to achieve similar overt functions through different processes (equifinality) and different overt functions through similar processes (multifinality).
Thus, lower organisms are treated as inferring the internal states of other organisms from overt signals and then responding.
To the extent that extra-syntactic systems are responsible for overt subjects, there is less reason to attribute a lack of syntactic knowledge to the child.
As an analogical change, this would have been supported by the parallel use of modals and be in ellipsis contexts and with overt infinitives.
