Chapter 14- The Interaction Hypothesis: Why You …
Week 11 -- Long's Interaction Hypothesis
In the example of polar interrogatives, discussed above, we saw how children apparently require explicit falsifying evidence in order to rule out the plausible-seeming but false hypothesis, H1. Premiss 2 ofthe argument generalizes this claim: there are many instances in which learners need specific kinds of falsifying data to correct their mistakes (data that the argument goes on to assert are unavailable). These claims about the data learners would need in order to learn grammar are underpinned by certain assumptions about the learning algorithm they employ. For example, the idea that false hypotheses are rejected only when they are explicitly falsified in the data suggests that learners are incapable of taking any kind of probabilistic or holistic approach to confirmation and disconfirmation. Likewise, the idea that learners unequipped with inborn knowledge of UG are very likely indeed to entertain false hypotheses suggests that their method of generating hypotheses is insensitive to background information or past experience. (e.g., information about what sorts of generalizations have worked in other contexts
Interaction hypothesis - SlideShare
So endemic is the impoverishment of the pld, according to Chomskyans, that it began to seem as if the entire learning paradigm were inapplicable to language. As more and more and stricter and stricter innate constraints needed to be imposed on the learner's hypothesis space to account for their learning rules in the absence of relevant data, notions like hypothesis generation and testing seemed to have less and less purchase. This situation fuelled the recent shift away from hypothesis testing models of language acquisition and towards parameter setting models discussed in §2.1 above.